For details of installing Firefox 2 see Install an older version of Firefox.

I strongly advise against doing this as you are likely to have problems due to Firefox 3.6 versions using different files to store user data than Firefox 2, so you will lose any recent data such as bookmarks. Firefox 2 is also no longer supported and will have known security issues.

A better alternative is to install the portable version of Firefox 2 on your hard drive. This is available from http://portableapps.com/apps/internet/firefox_portable

Near the bottom of that page is a link for Firefox Portable 2.0.0.20, download that and when you run the installer choose a location on your hard drive. This installation will be totally separate from your Firefox 3.6.13 installation, and can be used when you need to use the Carworx program.

You can do a custom install to install the Firefox 2.0.0.20 version in another program folder (Mozilla Firefox2), but you have to make sure that you use that version with its own profile folder. So do not launch Firefox after installing that version.

• 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

• ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/2.0.0.20/win32/en-US/