There are several online av scans but I don't know if they will work in your particular application.
To use them, you would have to be able to connect online however.
In a Google search I found the following:
"AV Eagle Eye - Professional Stand Alone CD
Are you responsible for a large number of computers attached to the internet? Are you responsible for ensuring that a large number of computers are free of viruses and other threats? Then you should consider AV Eagle Professional stand alone CD. This CD will run the AV Eagle program from a compatible machine without installing and maintaining the software on each machine. This software is very useful in testing compliance with firewall's and outgoing protection on a larger scale basis.
If you are in IT and are required to ensure that workstations virus protection is up and running, then AV Eagle is an economic solution for you! "http://www.twobrotherssoftware.com/aveagle/alone.php
I have never used this and therefore cannot personally vouch for it, but there must be others able to be run without installation as well.
Edited by Enthusiast, 31 January 2006 - 03:17 AM.