Your friend's computer is infected with what Symantec calls
W32.Chod.D or one of its descendants. If you clicked the link and are using an Admin-class account without antivirus protection, your computer is probably infected too.
One symptom of infection is that it makes you post in the wrong section of the Forums.
Once Chod.D is installed, it can take some maneuvering to get it off, because it prevents antivirus software from running if you do install some. I suggest downloading this
text file and saving it first, then follow the instructions precisely
while in Safe Mode, as a preliminary knockdown punch against the virus. Then reboot into normal Windows and download and install
Microsoft Baseline Security Analyzer and a 30-day trial of Kaspersky Antivirus Personal 5 from
http://www.kaspersky.com/trials. Configure it, update it, scan with it.