I don't know if this is the right place to ask this, some moderator can move the thread if it doesn't belong here.

I've been using Windows Movie Maker 2 for quite a while for making skate movies. It's OK, but I'd need a much better program. I've been searching Google for hours now, and I can't really find anything. I found Adobe Premiere Elements though, but the trial download doesn't work, so I don't really know what it's like. I want to try the program before I buy it. Also, I read that Adobe Premiere Elements supported only one resolution. I need the 320x240 resolution to work.
The best would be if there were some free program out there that I could use, but I realize that is probably not likely. I found Zwei-Stein and a few others, but they were no good in my opinion.
I can't afford buying a too expensive program, about $140 would be the maximum.
Which program should I buy?