How can i clean my computer infected by trojan??

the infected files are located in WINDOWS directory and my antivirus cannot delete them or quarantine, or something.

How can i clean my computer infected by trojan??suzuki

Get avg antivirus from http://download.com and spyware terminator

How can i clean my computer infected by trojan??virus

To get rid of it, download the following:

Avira: http://www.free-av.com/ (if you don't have anti-virus, or if you have Norton or AVG replace it with this)

Spyware Terminator (turn off web security guard): http://www.spywareterminator.com/

Spybot: http://www.safer-networking.org/ (use immunise feature)

Superantispyware: http://superantispyware.com/

Comodo: http://www.comodofirewall.notlong.com/ (turn off defense+ to see fewer alerts)

Update all and scan your computer, removing or quarantining what is found.

In future, do not click on adverts, and do not download from dodgy websites promising free stuff that you have to pay for elsewhere.

Use firefox: http://www.mozilla.com/ and the AdBlock extension (http://tinyurl.com/2cd87q ) and whatever other useful extensions like Download Statusbar you want.
bro i suggest used kaspersky internet security 30 days trial it will remove all the virus from your computer. Trust me. The best anti virus and spyware. download it here http://www.kaspersky.com/trials then click on free internet security download thats only for 30 days trial good luck. Install it to your pc. Then do a scan in safe mode
install the Google Pack. Check this best answer..