I don't even know if those old machines in our studio have a USB port!
This popped into my head when I heard Tom say that his IE crashed and he couldn't install firefox on his machine.
It's called Portable Firefox. It runs from a usb drive or any portable device and keeps everything that you need. Here's the URL
http://johnhaller.com/jh/mozilla/portable_firefox/
It's at 1.0.7 right now but the site says that 1.5 is "released Real Soon Now?... this week."
As far as I know this is windows only. There is a script that lets mac users use it but its not fully functional, found here
http://www.theplaceforitall.com/portablefirefox/
The site has a few other portable apps, you should check it out.

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