To remove the 'splash' screen that appears when opening Outlook Express, you will need to modify the registry. If you are comfortable doing so, run "regedit.exe" Navigate down to HKEY_CURRENT_USER, Identities, {dei-asdiofew-avieoadi-whatever}, Software, Microsoft, then click on "Outlook Express, then 5.x" On the right pane, right-click on a blank area, choosing "New" then "DWORD Value." Name this value "NoSplash." Right-click on the new DWORD Value you made and choose "Modify." On the dialog box that appears, enter "1" as the value data and press OK to close the dialog box. Now, close Registry Editor.
Open OE again, and wala, no stupid 2 second delay. Yay!
Edit: Fixed the instructions - I left out one line....my bad. Should work fine now.