Install each version into their own unique Program Files folder, by using the Custom option on the first installation page. Create new profiles exclusively for each version and then create a desktop shortcut with -P "profile" appended to the target to launch each version with the appropriate profile. * http://kb.mozillazine.org/Testing_pre-release_versions * http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows * http://kb.mozillazine.org/Shortcut_to_a_specific_profile * http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

Thanks for the Quick reply. It seems to be a good reply, Will check let you know after implementing it... Thanks