I've been curious about this one too ! It seems pretty cool and straightforward. I would imagine there are the minimum CPU requirements, RAM, blah, blah.....but it's USB, so....it's probably nice.
I'm gonna try to check one out soon as this post has just lit a fire. I have the mag ad I tore out and hung on the wall next to my desk to remind me ..... :roll:
Can't go wrong with AmpliTube either, that's a monster piece of sofware !