Multiple Firefox profile in single machine

Start Firefox ProfileManager from command line or windows->run

Firefox.exe --profilemanager

By using the profile manager, we can configure multiple profiles.

Then start Firefox with specific profile by adding appropriate parameter to properties of each shortcut.

"C:\Program Files\Mozilla Firefox 3 Beta 1\firefox.exe" -P FF3-Beta1

TIPS: It seems the parameter P is case sensitive.

Here is the details.