GBA C programming compiler gcc

I am trying to get started in programming for the GBA in Windows. Could somebody point me to a a good reference where they have been able to follow a complete set of directions?

I want the directions to include the following:

1) downloading the compiler needed for gba development2) downloading the gcc necessary for gba development

I have tried a few websites but I always run into the problem of getting some variant of gcc installed. If you have not personally downloaded a gba development kit and compiled code for the gba do not answer this thread with a link to cygwin.