DevKitPro - Good starter for Homebrew Coders
The perfect thing for people who are looking to develop Homebrew. DevKitPro is a toolset for Homebrew development on various consoles including Wii, DS, PSP and Gamecube.
You can download DevKitPro here
I recommend installing DevKitPPC, Programmer's NotePad and anything else you'd like. Microsoft Visual C++ might come in handy too. A piece of useful advice to avoid errors; make sure to install DevKitPro in a directory with no spaces
C:/Documents and Settings/Users/Admin/DevKitPro
This could work: