What is it about Pinnacle Studio 7 that you don't like?
If you're looking for a Win XP program similar to iMovie, I think Ulead Systems' VideoStudio 7 comes close. It's not very expensive either.
For free, Windows Movie Maker 2.0 looks like a decent program, but you don't have a whole lot of export options without buying third-party software. So if you're going to spend $100, I'd buy VideoSTudio 7, which does it all from capture to export.
Good luck!