Hmm. Would this post provide any help?

CrossGCC may also shed some light.

For a moment I was all set to point you to KDevelop but - wait, that's not for Win32.

Hey, if you want to program in Forth ... !

Truth be told, I'm in the same boat as you so I'll be looking as well, at least until I get Linux/SPARC installed here. Then the fun really begins. Whee ...