Most of the movies I download open in little quicktime windows on my computer... Not that great for family viewing!!!

I have been told to download RAR files for full screen viewing, I don't know much about these things but sofar with limewire most of the files displayed in a search are mpeg, avi, wmv, and occasionally one or two others. I have yet to see a RAR file on Limewire.

Any light on this subject?

Control + F will give you full screen. This is the same for most video viewer programs. If you're not happy with QT then get VLC: http://www.videolan.org/vlc/ (choose nearest mirror site)

I have no idea what rar has to do with video so I'm not surprised you can't find video files wrapped into a rar file.

BTW if you have a video card on your comp with video out, then hook up with your TV!