Hi there
welcome to my blog for the best free to use antivirus software available on the internet,please note these are free to use full version softwares,not crippled versions,plus they do a great job at virus removal.
so here we go here is the list of free stuff.
Avg free antivirus— http://free.grisoft.com/doc/avg-anti-virus-free/lng/us/tpl/v…

Avira AntiVir PersonalEdition Classic—- http://www.free-av.com/

Free avast! 4 Home Edition—- http://www.avast.com/eng/download-avast-home.html

clamwin free antivirus—- http://www.clamwin.com/content/view/18/46/

Comodo AntiVirus—— http://www.comodogroup.com/products/free_products.html

VCatch Basic Version 5——- http://www.vcatch.com/download.html

so theres a few to be going on with.
thank you.