Thanks Raymond,
I've never installed a rivet before. I have the exact pieces (original & replacement) pictured in your diagram, but I've never worked with rivets before. Once I drill out the existing rivet, what kind of rivet would I use to replace it? I spoke with one body shop that was very helpful but the guy told me that it couldn't be done because it was a "special rivet." Bear in mind that I don't need the repair to be 100% perfect as I could save anywhere from $130 to $300 if I don't have to buy a used or new window regulator.
John