TMPGEnc output file size

[Bullseye]

This is a real newbie question ok?
When using TMPEnc202 and I'm manually setting start and end frames to create separate mpegs, how can i calculate how big each files are going to be, so they'll fit onto a cd ? I must be missing the obvious somewhere.....
Thanks for your patience.

[twistee]

Its better if you read the guides and do it the way it says...but anyway. You want to split the file up at minutes not megs. Work out at what frame is the movie 70 - 80 minutes into it (depending on cd), then do it from there. But i recomend using the guides on doom9.net...