XMaXXXedOutX:SOME PEOPLE MIGHT THINK THAT THIS IS A VERY VERY STUPID QUESTION so be prepared............ so i watched the GDC video about this and the part i never could figure out was, is there any monthly fee like the one for xbox or is everything free?
There is no monthly fee for Xbox either. You pay in either 4 month or 12 month increments.
Clarification aside, if you had read the FAQ to which you are responding you would have found the answer:
Q: Do I need an XNA Creators Club subscription to deploy the game?
A: No subscription is required to deploy the Zune game from your PC.
also... after this has been released is there anyway of getting DOOM onto that because DOOM is the best
If you program it, sure. I doubt that will be an easy task for most people, but I would imagine doable. If they got it a DOOM clone running on an iPod a few years ago, I'm sure the Zune can handle it.