Your welcome Independentvn,
I'm sorry to hear that. You might check with the registry cleaning program to see if it may have a undo option to restore the reg files it deletes.
Another option is to do a Repair install. However, with SP1 installed it can take a while to do since you will need to create a slipstream DVD to use first since the normal method will not work anymore with SP1 installed.
Repair Install For Vista
Shawn