xBox modded controller w/ arduino IDE :)

Would this be possible? I HATE Assembly, Arduino IDE is easy to use and worth the extra costs for the ATmega chips.

Two questions:

Can I program with the arduino IDE using like an ATtiny13?

Would this project even be possible? Check the link below for other people who have done this with PIC and assembly:

http://www.acidmods.com/forum/index.php?topic=34437.0