Dell Windows Refund
Unfortunately, the people were less than helpful. Not only did they insist that Windows was given for free, but that they could only refund me for zero dollars, if I'd like to return the disk.
Somehow, that flies in the face of reports like: this, where a UK linux user got back the full value of microsoft windows.
So, the best I could do down this avenue was to get stopped by a woman named Tracy, who gave me the address of the legal department at Dell Canada. For those of you who are interested, it's available only by snail mail.
155 Gordon Baker Road
North York Ontario
If they're giving away Microsoft windows XP for free, then I can't imagine Microsoft would have any problems with me passing on the licence key for it - after all, Microsoft's flagship product now has a value approaching zero.