Speaking of SciTE, my favorite FOSS text editor on Win32 is Notepad++ which uses the scintilla editor as it's core, nicely packaged and configured and very user-friendly... if you want lots of nice features in a *very* light-weight package, but you don't want to waste/spend time tweaking, give it a try. I use it every day.

I'm also quite fond of EPIC for the Eclipse Workbench. It helps bring the ease of developing and debugging with a full IDE to Perl.

Also, Xming is a light, simple, effective X server I use every day.

I'd like to give my endorsements for PuTTY and FileZilla and Firefox - and Opera. I would use Opera as my primary browser if only I wasn't so addicted to the FF add-ons. :)