search engine attack

[confused]

somehow searchv (search with pleasure) has taken over as
the default search engine and I have to change it to Yahoo
or whatever I want every time I start up the system. What
happened and how can I get rid of searchv ??

 

[Taurarian]

http://securityresponse.symantec.com/avcenter/venc/data/trojan.qhosts.html

also consider
http://support.microsoft.com/?kbid=320159
Home Page Setting Changes Unexpectedly, or You Cannot Change Your Home Page
Setting