Hope : Remove Viruses n All
Spybot S&D (download, check for updates, read the tutorial and scan often, it also does some blocking)
http://www.safer-networking.org/en/home/index.html
Ad-Aware SE (a scanner, download, check for updates, read the directions and scan.
http://www.lavasoftusa.com/
cwshredder (stand alone unit)(another small scanner for certain things, ALL other windows should be closed)
http://www.intermute.com/spysubtract/cwshredder_download.html
Download anti-trojan (any of the following)
The Cleaner Pro 30 days trial - http://www.moosoft.com
TrojanHunter - http://www.misec.net/ (trial)
Also do an online scan at one or all of these.
Housecall (using IE with Active-X)
http://housecall.trendmicro.com/housecall/start_corp.asp
Housecall (all browsers using java)
http://uk.trendmicro-europe.com/enterprise/products/housecall_launch.php
PandaActivescan
http://www.pandasoftware.com/activescan/com/activescan_principal.htm
