No comprendo...
If the file is too big, it's not gonna fit on one DVD. If you want to compress it, then you'll decrease it's quality. Do you really want that?
How big is the file?
How do you go about it when trying to make a DVD with Roxio?

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

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