Plz refer me a site through which I can get free ';REGISTERED'; Anti-Virus software for free

Nearly 5 days ago,my computer got infected with virus and it is working ver slow.It takes 10-12 min to open desktop and 4-5 min to open a file/link.It has gone crazy and I dont have any Registered Anti Virus software.Though I am having many unregistered (trial-version) anti-virus software.Plz refer me a site or place to download free Registered Anti Virus software or tell me what to do. *Need an advice very very soon,so guys help me* Thanx

==============%26gt; Sandeep

Plz refer me a site through which I can get free ''REGISTERED'' Anti-Virus software for free.?internet security software

http://www.download.com/

Plz refer me a site through which I can get free ''REGISTERED'' Anti-Virus software for free.?moto guzzi

http://www.clamwin.com/ This Antivirus is free and Fully Supported with updates. Try and hope I give you the best answer
Here is a list of free scans.I would recommend running ewido first.

Spybots search and Destroy http://www.download.com/3000-8022-101221...

adaware se%26gt; http://www.download.com/ad-aware-se-pers...

http://www.webroot.com/land/freescan.php...

a-squared Free%26gt; http://www.emsisoft.com/en/software/free...

http://housecall.antivirus.com/housecall...