Wow... erm, well, first, I used ZiPhone also. But anyway, I'm impressed that you have your phone numbers in a text file... I don't.

But then again, I have my phone synced to my computer and redundant backups of my computer's drive....

But how did you get the phone numbers on the iPhone to begin with? You haven't been creating all your contacts manually on the iPhone, have you? That would be dreadful!