Goto
http://housecall.antivirus.com, and choose free scan. I personally use this, and it works great. (I am a network Technician and a programmer for over 20 years) I do not use any antispyware, it resides in the background and steals resources, as well as anti virus software. Education is the best resource for not getting viruses and spyware.
Just my 10 bucks, I am a lot more expensive than others!
Cheers,
Phil