WOTTA NIGHTMARE!!!
The replacement bolts I got don't quite fit properly. They're tight enough for now, but it turns out the ones that attach the corner piece to the two tables uses smaller ones. I'll probably end up sending to the manufacturer for a replacement set. Meanwhile I have the two tables set up. The rest will have to wait.
Then I found out that for all the dozens of cables I have, not one of them is a transfer cable - USB to USB. A trip to Best Buy before they closed, and I already knew I wanted another USB hub, so I got one of those too. The problem was that they were hidden in the back, and I couldn't find a free geek to help me. I finally made it back home, but it's too dark and I'm too tired to fiddle with stuff, so I'm using the old PC for one more day at least.
Anyway, here's what it looks like for the present.
