Recently tried to install a (free) updated version of adobe reader. (think version 8.1) got a 'unable to write to CLSID *** file (as well as others if I clicked 'ignore'))

Purchase a new/valid adobe acrobat 8 standard (CD version) and started getting similar error messages when I attempted the install. It was not just one file that it could not write to.

 

Example: Error 1406. Could not write valure ThreadingModel to key \Software\Classes\CLSID\{06849E9F-C8D7-4D59-B87D-784B7D6BE0B3}\InprocServer32. Verify that you have sufficient access to that key, or contact your support personnel.  I aborted the install to prevent loss of my current adobe reader and adobe elements

 

I have admin privileges on this (home) computer.

 

Is there a way to safely view the registry files to see if a 'tail' has been added making them 'invalid' files or to see if the files are purely Adobe?  If they are found to be Adobe, and I delete them (after backing up) would the install disk create a new file that it can write to?

 

Running a Dimension 9100, windows XP media center addition/service pack 2

Have Norton system works and Norton Internet security 2008