Please see this page
http://www.finaluninstaller.com/blog/ut/how-to-uninstall-ask-toolbar.html
Note that some of the step have scroll arrows (which you need to use to see all of what is there) .. follow directions and you should be ok.
There is also an automatic uninstaller listed on same page. It may work.
1):
Terminate Ask Toolbar process
c:\program files\ask.com\SaUpdate.exe c:\program files\ask.com\UpdateTask.exe
2):
Delete Ask Toolbar files.
c:\program files\ask.com\config.xml c:\program files\ask.com\GenericAskToolbar.dll c:\program files\ask.com\mupcfg.xml c:\program files\ask.com\SaUpdate.exe c:\rogram files\ask.com\UpdateTask.exe c:\WINDOWS\tasks\scheduled update for ask toolbar.job
3):
Delete Ask Toolbar directories.
C:\Documents and Settings\Administrator\Local Settings\Application Data\asktoolbar c:\program files\ask.com\ C:\WINDOWS\Installer\{86d4b82a-abed-442a-be86-96357b70f4fe}
4):
Delete Ask Toolbar registry keys and values.
HKEY_CLASSES_ROOT\CLSID\{D4027C7F-154A-4066-A1AD-4243D8127440}
HKEY_CLASSES_ROOT\Installer\Features\A28B4D68DEBAA244EB686953B7074FEF
HKEY_CLASSES_ROOT\Installer\Products\A28B4D68DEBAA244EB686953B7074FEF
HKEY_CLASSES_ROOT\Installer\UpgradeCodes\F928123A039649549966D4C29D35B1C9
HKEY_CLASSES_ROOT\Interface\{91CF619A-4686-4CA4-9232-3B2E6B63AA92}
HKEY_CLASSES_ROOT\TypeLib\{2996F0E7-292B-4CAE-893F-47B8B1C05B56}
HKEY_CURRENT_USER\Software\appdatalow\askbardis
HKEY_CURRENT_USER\Software\appdatalow\askbardis\bar
HKEY_LOCAL_MACHINE\Software\classes\appid\{9b0cb95c-933a-4b8c-b6d4-edcd19a43874}
HKEY_LOCAL_MACHINE\Software\classes\appid\genericasktoolbar.dll
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D4027C7F-154A-4066-A1AD-4243D8127440}
HKEY_LOCAL_MACHINE\Software\classes\genericasktoolbar.toolbarwnd
HKEY_LOCAL_MACHINE\Software\classes\genericasktoolbar.toolbarwnd.1
HKEY_LOCAL_MACHINE\Software\classes\genericasktoolbar.toolbarwnd.1\clsid
HKEY_LOCAL_MACHINE\Software\classes\genericasktoolbar.toolbarwnd\clsid
HKEY_LOCAL_MACHINE\Software\classes\genericasktoolbar.toolbarwnd\curver
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Features\A28B4D68DEBAA244EB686953B7074FEF
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\A28B4D68DEBAA244EB686953B7074FEF
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\F928123A039649549966D4C29D35B1C9
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{91CF619A-4686-4CA4-9232-3B2E6B63AA92}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{2996F0E7-292B-4CAE-893F-47B8B1C05B56}
HKEY_LOCAL_MACHINE\Software\Microsoft\internet explorer\low rights\elevationpolicy\{a5aa24ea-11b8-4113-95ae-9ed71deaf12a}
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\browser helper objects\{d4027c7f-154a-4066-a1ad-4243d8127440}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\F928123A039649549966D4C29D35B1C9
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\261F213D1F55267499B1F87D0CC3BCF7
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\741B4ADF27276464790022C965AB6DA8
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\7DE196B10195F5647A2B21B761F3DE01
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\9D4F5849367142E4685ED8C25E44C5ED
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\A5875B04372C19545BEB90D4D606C472
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\A876D9E80B896EC44A8620248CC79296
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\B66FFAB725B92594C986DE826A867888
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\A28B4D68DEBAA244EB686953B7074FEF
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}
HKEY_CURRENT_USER\Software\appdatalow\askbardis\bar\hpoparam
HKEY_LOCAL_MACHINE\Software\classes\appid\genericasktoolbar.dll\appid
HKEY_LOCAL_MACHINE\Software\Microsoft\internet explorer\toolbar\{d4027c7f-154a-4066-a1ad-4243d8127440}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\C:\Program Files\Ask.com\
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls\C:\Program Files\Ask.com\GenericAskToolbar.dll
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls\C:\Program Files\Ask.com\TaskScheduler.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows
\CurrentVersion\SharedDlls\C:\Program Files\Ask.com\UpdateTask.exe
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\authorizedcdfprefix
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\comments
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\contact
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\displayname
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\displayversion
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\estimatedsize
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\helplink
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\helptelephone
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\installdate
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\installlocation
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\installsource
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\language
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\modifypath
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\norepair
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\publisher
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\readme
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\size
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\uninstallstring
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\urlinfoabout
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\urlupdateinfo
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\version
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\versionmajor
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\versionminor
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\uninstall\{86d4b82a-abed-442a-be86-96357b70f4fe}\Windowsinstaller