Yahoo/Google 404 error

[Sean]

whenever I search using Yahoo or Google I get an Error
404 - in fact, I can't even get to Google.com / Norton
can't find a virus, and Yahoo's no help.

any ideas?

 

[Mike P]

You have spyware on your computer due to poor security
habits

 

[Taurarian]

You may in fact have a virus:
http://securityresponse.symantec.com/avcenter/venc/data/tro
jan.qhosts.removal.tool.html