I accidentally changed the entry in the Tools, Options, General tab so Excel
now tries to execute every file in my data directory. Needless to say, it
never gets to the point that I can get to the Tools menu to delete the entry.
I've also tried to Repair and also Remove Office, but the process hangs.
I'm also concerned that even if I repaired or reinstalled I would still have
the same problem.

Is there a file or set of files I can delete that will solve the problem?