Making iPhone games on Windows?

I am looking to learn and develop a game for the iPhone, but I do not have the money to buy a mac or pay for things like DragonFire SDK. I've read up about needing to program in Objective-C etc. but I'm confused about the many different operating systems and ways of doing it. I'm not looking to make a graphical powerhouse of a game, just a fairly simple 2D game. Is there any free opensource ways to do this? I've read about AirPlay SDK and GNU, as well as flash CS5 but I'm confused on where to start. Help appreciated!! I'm also looking for good tutorials on the best program/OS