Personally i'm with IanM... however just for some benifit here:
[url=]Microsoft Visual C++[/url] - Simple, Easy, Padantic and with so much help I can't believe they fit it all on a single DVD.
Codewarrior - An Industry multi-platform solution. If the platform has a microchip, chances are they have a special version just to dev on it.
Minimal General C Compiler for Windows - This is free, a pure C/C++ compiler (no fancy addons) and if that wasn't sweet enough...
Some crazy team has made this for you
MinGW Developer Studio, a platform independant C/C++ IDE (designed for use with MinGW)
Don't be fooled by the name though, although mingw started out as a Windows version of GCC it now covers every platform
Which is cool because I have it installed on Windows, Linux and MacOSX.