Which program do you not like? Windows Movie Maker? I'm guessing it's version 1, which lacks a lot of useful features. You can upgrade to version 2.0 for free via the Microsoft Web site. The download is about 8MB, not too big.
I'd look into Pinnacle Studio 8, Ulead VideoStudio 7, or the Sony Screenblast, which I believe all sell for $100. They are all easy to learn and all can produce professional-looking results.