By the way, this is how I won it:
http://www.microsoft.com/oem/english/promotions/GetVista.mspx
Went to the show (Intel and Microsoft - interesting stuff, even won a dual core laptop processor from the raffles) for my company.
Got the key code for the quiz (everyone who attends gets one.)
Took the stupid 15 question quiz. It's one of those tests where if there is an "All of the Above" option, you pick it. Really easy if you paid attention at the show.
Bought some stupid 10 dollar promo package with the 25 dollar gift certificate.
...profit
total cost: $00.00
Though there was a price for going to the roadshow, my company paid for it. And while I should probably give THEM the copy of Vista, I already gave them the laptop processor I won (wtf am i gonna do with it.)
So if you work on computers, find out when the roadshow is coming and attend. The roadshow I went to was like 2 weeks ago, and I didn't get around to taking the test until today, and I still won.