Every time I use IE 7 in my Xp professional computer,new windows open with google.com. How to stop that? ? -

Whenever I use IE7 google pages open itself and if i close it, another open in around 20 seconds. Is it a virus? Is it that harmful. How to get rid of that???

i think it is virus. you can download AV tool from http://www.mwti.net/ and scan it ur pc

Personally I dont trust http://www.mwti.net/ You could insted try housecall.trendmicro.com

Might be. Have you changed your homepage???? Maybe it is because of a toolbar so i would uninstall that.