Multiple Online Virus Checker..

[Demonic]

http://www.virustotal.com/en/indexx.html

Allows you to upload a file and then have it checked across loads of different virus checkers - one way to make sure the file your trying is safe - or not - as the case maybe

just try it with some of the WOOOL Mir2 based files - dodgy

 

[Ragnar]

Another good one is/was http://virusscan.jotti.org/ however it's gone so popular now that the servers are overloaded nearly 24/7