I have several USB thumb/flash drives ranging in size from 256MB to 2 GB, and I have ordered but not received an 8 GB which I am eagerly anticipating.

I thought it would be nice to use the 2GB for installing mobile applications such as FireFox. That way, when I am on the road, I don't have to worry about remembering my bookmarks and such. This was easy, as there is a 'mobile' version of FireFox designed specifically for this purpose.

Then I thought it would be nice to have an instant messenger service (preferably Microsoft's only because I use hotmail). But I can't find a way to install this software and be able to use it on multiple computers.

Any suggestions?