Vista - Registry Problem!

I wanted to test out Windows 7, so I made a backup of all my programs and [COLOR=#3676a2! important][COLOR=#3676a2! important]documents[/COLOR][/COLOR]. I used Automatic Backup, included with Vista. After backing up everything on [COLOR=#3676a2! important][COLOR=#3676a2! important]my [COLOR=#3676a2! important]computer[/COLOR][/COLOR][/COLOR], I installed Windows 7 (upgraded) [COLOR=#3676a2! important][COLOR=#3676a2! important]32bit[/COLOR][/COLOR]. When I decided it was time to go back to Vista, I did a System Recovery ([COLOR=#3676a2! important][COLOR=#3676a2! important]hp[/COLOR][/COLOR]). Upon restoring all of my data, I came upon the following problem:

All of my program files are still intact, however I failed to make a backup of my Registry before upgrading to Windows 7!

Now, my problem is, I have all these programs "installed" but no way to access them, as they are not registered. For example, I just installed Firefox to see if it would work (even though Firefox still shows files in C:\WINDOWS\Program Files\Mozilla Firefox), and all the plugins from my previous Firefox installation are still there, but are not registered, so when I open Firefox, I get this message:

"Firefox could not install this item because of a failure in Chrome Registration. Please contact the author about this problem."

I get this dialogue about 6 or 7 times before Firefox will start, and when it starts, it tells me to restart Firefox.

Question of the Day:
Does the Automatic Backup in Vista perform some sort of backup of my registry?

Any help would be greatly appreciated!