[mod: Split off from help wanted request since its turning into a tech discussion http://forums.xna.com/thread/55507.aspx]
If you are a solo coder or a small two or three-man team who can complete an XNA gaming project within 7 months, then we are interested in you. The responsibilities will include creating all 3D models, game art, textures, and then integrating all content (including audio) into the game engine.
A "coder" doesn't create 3D models and game art. That's what you have "artists" for. And, to have an idea of whether a 7 month deadline is even realistic, you'd need at least a master list of assets, listing each asset, what the budget is (texture/polys/vertices/bones), and some reference art for what you want the quality bar to be like. If you haven't developed this yet, then you should know that doing so is traditionally the responsibility of the hiring company, not the hiree. If you need help developing that information, then you should probably contract out for that, first, before contracting out for implementation help.
Another suggestion for you is to describe the gameplay. If it is music-based, it's not clear that XNA will be able to do what you need, because there is no explicit sync between audio cues and on-screen action -- specifically, if you're playing some background music, you will start drifting out of tempo after a few bars, and there's no way to stitch multiple segments together to make a song and have any guarantee that they will match up in time/rhythm.