Latexlab: web based LaTeX editor
code.google.com
code.google.com
If you go the full IDE path you have TeXnicCenter, WinEdt, and LEd.
If you go text editor path you have your favorite editor to write the source and latexmk to automatically build when the source file changes.
Combine your favorite way of writing with MiKTex for the core program and package management and you have a bulletproof way of using Latex in Windows.