Mozilla has finally released Firefox 2 Beta 1 and here is the Portable version for you.
All you have to do is download the Portable Firefox 2.0 Beta 1 file below. Then you unzip the file and browse for the file PortableFirefox.exe. Just execute that file and you will be running Firefox 2.0 Beta 1! The profile is kept with the PortableFirefox folder so you don’t have to worry about messing up your other profile and the uninstallation process is simple…just delete the folder!
I have also put together a nice guide for those people looking to tweak Firefox 2 Beta 1.