I have one question, I run FireFox on my computer but how do I get different versions to run? IE: I can have FireFox 3.0 and FireFox 3.1 running at the same time. But how do I get 3.1 (for example) on my computer but still have the old version on my computer. I like keeping older versions of stuff on my compiter just in case if the new version I dont like. Thanks!