looking for a program
 

Would like to be able to record / save the movies that are streamed on justin tv on the net on the harddisk for viewing later. Any ideas? Thanks.

Fraps?

I think there is a program that grabs youtube movies etc, but I have not idea what it is.

Start here:
Three ways to save video from the Internet - Insider Secrets - CNET Reviews

I've used the webpage option before. It worked well, and is especially good because there is no program to download and install. You might have to try a few to get it to work on justin.tv specifically.

i've used media converter a fair number of times Media Converter - the fastest free online audio and video converter

but i've never used justin.tv so i wouldn't know if it could work here.

Try, 'Bytescout Movies Extractor Scout'.