Where can I find an online anti-virus that doesn't install on your PC?

[alvertadidion89950]

I've got 5 PCs that I'm trying to use to train disadvantaged young
people. The problem is they are riddled with viruses and a firewall
blocks me from updating them. The people in charge of maintaining the
PCs won't fix them or give me the admin password (Win XP) to let me
install a new or updated antivirus the centre is being shut down in a
few months.

If they were working, I could still do a lot with them, so I've been
looking for a good online virus scan - but they all try to download a
little .exe onto your PC first, and the settings on the PCs won't
allow that.

Suggestions? Solutions? Links?

[Patrick E. Bennett, Jr.]

You might try a linux bootable cd that comes with an antivirus scanner.
RIP Linux is one (and I'm sure there are others) -
http://www.tux.org/pub/people/kent-robotti/looplinux/rip/ . Here's the
documentation
http://www.tux.org/pub/people/kent-robotti/looplinux/rip/docs/RIPLinuX.txt.
See the very bottom of the file for antivirus scanning instructions.

[engvallgoldner1972]

>so I've been looking for a good online virus scan

I usually use this one http://pmcware.com/freedowns