Wow, never quoted 4 people before but here goes...
Agree 100%

I was just showing, how in the spirit of Christmas, potential pirates may wish to reevaluate their life style decisions.
Doesn't matter now though, cos ...
Nice one
The retail version allows you to contact Microsoft (only a certain number of times I think) for support if you have a problem. The OEM version is normally installed with pre-built computers and so the support falls to the computer manufacturer rather than Microsoft.
Ah, that's pretty good luck that you managed to get Windows for Christmas! Also, Ebuyer's a great site that I've used a lot of times. It's a USB 2.0 device so there shouldn't be any problem. Also on the Ebuyer site for the product it says for OS Required:
"...Apple MacOS X 10.4.8 or later"
HAVE A MERRY
CHRISTMAS EVERYONE !