Create a script which will clean out the registry after a failed backup.

I have come across several cases, where sometimes if an install was attempted several times and uninstalled, you can not correctly install Netbackup until the registry is 'cleaned'

EX : http://www.symantec.com/docs/TECH87262 

and

http://www.symantec.com/docs/TECH59405
 

If there was a batch file or script that would be created to do this in one shot, that would be a great help.

If at all possible add an export of the registry as a safety precaution.