Thank you for writing back so quickly!
We did a rebuild about a week ago.
The hard drive and computer are new. We just installed a new computer yesterday thinking that this was the problem. Unfortunately, I'm still getting the error.
Also, I am on a network with a database on a server. The server is working fine. It's just my system that has issues on the old computer and the new one.
My tech told me to tell you that we are running XP, not Vista on the computer. And that we did a cleanup the day that it was installed.

Any ideas?