Need an opinion for a security strategy

The people of my local computer club asked me to recommend a security setup for the club computers. Those are XP, Vista and Win7 - more than a dozen all together and most are double or triple booting. Some also have Ubuntu on them, but that is not used a lot.
They were recently hammered with viruses, in part apparently because people used contaminated USB sticks on them. Up to now, free AVG was installed. But obviously nobody really did a regular update.
I plan to recommend MSE and the windows firewall because that works well for me and there is no additional cost. But I wonder whether any of you has a better recommendation - especially for the XP systems because I do not have any of those and thus no idea what's good for them.
Your input is appreciated.

hi !

one quick: turn off "Autoplay".

thanks guys. Turning Autoplay off is definitely a good idea. And jav, I will have a look at all your links (will keep me busy for the rest of the night - LOL). But things are being written to the systems during the hands-on classes. And I also want to keep things as simple as possible because a lot of the members are plain beginners and could not deal with fancy setups - else i would have suggested a sandbox for the hands-on. The setup must be transparent to them.

You could try using these to remove/disable autorun.inf viruses from spreading to your pc.It's freeware...:)Hope this helps you.

Panda USB and AutoRun Vaccine | Panda Research Blog

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