That is a good question. Yes, it is possible to do but I'm not sure if it's legal.
So I'd recommend you post your query in a fresh thread at the official Microsoft forums in this relevant sub-forum click here (I think it's the correct one - but if it's not, a mod will move it to the correct section), after registering via click here. If you already have a Windows Live ID, login with that instead & try posting.
Once you find out that it's indeed legal, return to let us know & we'll let you know how to go about it. G