Like several others here, I've just downloaded the Xbox SDK (~150mb) off the net, with the intention of 'porting me some software'. I'm initially going to focus on porting a Sega Genesis emulator. Why?..because I can.
I only have a retail Xbox, soon to be chipped, which limits my development/debugging options. How are others here compiling/debugging and trying software? Are you developing .exe files using only the subset of APIs available on both the xbox and the PC, and later building .xbe files from the same source code. Have you written libraries to simulate the XBox APIs that are not available on the PC (ie the XBox save game APIs etc)?
Can you give me any other pointers?