Lance,
You can use Windows Media Encoder to compress you already rendered videos. It comes free on most Windows computers. It is located under Windows Media on your START menu.
Go here to download the program:
WME Download siteGo here for info on how to use WME:
WME Intro and HELP PageI wouldn't go lower than 500 kbps when compressing videos.
Lance.....since you're a Silver member, you can upload some larger clips if you need to. Send me a PM if you need.