I've heard a lot of good things about FATE, I'd certainly consider picking it up to do something with. Aren't there a number of versions?
How long is a piece of string.
Open questions generate discussion, closed questions don't.
I seem to remember that the Field Manuals contain material for whichever edition of the rpg was current when they were written. My versions of FM: Draconis Combine and FWL are both written for MW2 (I've also got the first edition of FM: Mercs, with MW2 stats, though I think the later editions/supplements are MW3). I don't see a straightforward MW2-3 conversion, but I imagine they'd provide a broad picture of the skills the package should give you.