A couple of updates. After verifying my situation, Dell overnighted the restore disks to me, and it went swimmingly (well, the drivers
didn't, but I got through it). Big kudos to Dell for being so helpful.
Regarding the Samsung unit, I contacted the MS Activation line and got a helpful woman named Anna. We spent a good ten minutes trying different key possibilities, but failed. She suggested calling a customer support number. Got two helpful people there, and a woman named Karla spent a good 15 minutes with me and activated the machine manually via remote control.
I have to say these two companies really extended themselves to do the right thing for a customer. It's a good thing to see. And thanks for your help, Noel.
Blessings for a happy new year.