> Copying data disks(data files)? what do you use native on the computer?
Same as in 10.4 and 10.5. Use a burn folder.
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docs.info.apple.com]
> On my old (old) Ibook I could burn a disk via apples program.
What program did you use? The Disk Utility can be used to burn CDs and DVDs from a disk image.
> I can't find anything except iDVD. Will this burn stuff I've downloaded off the TV?
Maybe. "Downloaded off the tv" doesn't give us much to work from. What kinds of files are they? What codecs were used? Is the purpose to make DVDs that you can play in a set-top DVD player or to preserve the files?