Good security website that provides a port scan and other tests: https://www.grc.com/ Look for ShieldsUP under Hot Spots
Here are 3 free online virus scanners: http://www.kaspersky.com/virusscanner http://housecall.trendmicro.com/ http://onecare.live.com/site/en-us/default.htm?s_cid=sah/?s_cid=sah Bonus: http://us.trendmicro.com/us/products/personal/CWShredder/index.html