Online Scanners: Note: These online scanners can scan your PC and some may be able to clean things off or recommend what needs cleaned.
TrendMicro: http://housecall.trendmicro.com/
BitDefender: http://quickscan.bitdefender.com/
NOD 32: http://www.eset.com/us/onlinescan/
F-Secure: http://www.f-secure.com/en/web/home_us/online-scanner
Panda: (Requires using Internet Explorer) http://www.pandasecurity.com/usa/homeusers/solutions/activescan/default.htm?track=80383
BullGuard: http://www.bullguard.com/support/online-scanner.aspx
McAfee: http://home.mcafee.com/downloads/free-virus-scan
Microsoft: http://www.microsoft.com/security/scanner/en-us/default.aspx
Symantec: http://security.symantec.com/sscv6/home.asp?langid=ie&venid=sym&plfid=23&pkj=MWSVFIZTYMWPAZTJWUF&bhcp=1
aSquared: http://www.emsisoft.com/en/software/ax/
Norton: http://security.symantec.com/NSS/GetNSS.aspx
Comodo Cloud: http://www.comodo.com/home/internet-security/cloud-scanner.php
ESET: http://www.eset.com/us/online-scanner/
Kaspersky Security Scan: http://usa.kaspersky.com/downloads/free-anti-virus-scan?domain=kaspersky.com