Trojan freezing internet browser?

my bfs computer has a trojan/virus on it, but i cant get rid of it. ive used virus checkers spy doctor and spybot search and destory and he also has avg or agv? something like that anyway, but it just wont go.

when you open up IE or firefox, the homepage loads but if you try to go to another page, the page just completly freezes and in IE blank tabs and windows keep opening and theres also the pop ups too.

ive uninstalled all the unecessary programs he had on there like poker, toolbars etc, ive also reset IE's settings and uninstalled and then re installed FF hoping it may do something after completing the virus scans. but the same thing keeps happening.

the os is vista.

any ideas?

thanks

Trojan freezing internet browser?spyware removal

Click start%26gt;click run type in msconfig and then press enter. Goto the start up tab and uncheck everything except your anti virus,click ok and reboot.

1. Download and run firefox to protect your from future spyware attacks and pop ups which are coming in through Internet Explorer IE!! (Trojan downloaders, win32 ).

http://securitynewsfromthenet.blogspot.c...

2. Run the vundo and combo fix http://securitynewsfromthenet.blogspot.c...

3. Run Malwarebytes Anti-Malware

http://securitynewsfromthenet.blogspot.c...

4. Run the anti spyware remove programs spybot http://securitynewsfromthenet.blogspot.c... and superantispyware http://securitynewsfromthenet.blogspot.c... to get rid of the nasties