Test Day Setup
1. Download and unpack/install (zip) Firefox 1.5.0.8 RC2 (Win32, Linux, Mac).
2. Install the add on for the build id: Add ons
3. You should run Firefox with a new profile and set up your environment so that you can run different versions of the browser at the same time:
> set MOZ_NO_REMOTE=1 > firefox -profileManager
5. Start testing things, focusing on the things that need testing.