“Adware Generic3.WNN” has been detected in my computer. How do i remove it?

When I scan using AVG it says it has found “Adware Generic3.WNN” . It offered to remove it, but went on to say forceful removal of it may result in a crash.

You should use an antivirus program and antispyware software, because your computer is now infected with viruses and/or spyware.
Here you have more information on computer security, as well as good and free programs that you can download into your computer:
The website list top ten the best and newest anti-spyware in 2008.

http://toptenantispywareviews.com/

All are safe and can be trusted and you can download one.