Hey Guys - Just FYI - While none of the upgrade sites say that it does or does not work with the Mac Mini, I bought the Apple 802.11n Upgrade Kit and disassembled the Mini and installed the card. Booted the Mini back up and it works perfectly. It's speeds are in line with what you should expect from "n" networking.
Also upgraded my first generation MacBook (Core Duo) to the 802.11n card and it works great. Went to Fry's Electronics and bought a Core2Duo chip for the Mini but bought the wrong chipset, will have to do it another time. The Core2Duo 2.33 Ghz was $200 even. Bought the 802.11n from
Vistek as when I originally bought them I could not find a US retailer that actually had them in stock. They sold out moments after I bought them. I guess people were really jumping on them.