No. DL burn support was added in Toast 6. You can use Disk Utility or the Finder to burn DL media with 10.4.8. Otherwise check into Toast 6 (for G3's) Toast 7 (for G4's and later) or Popcorn. Roxio's having a sale right now.
I'm just a fellow Toast-user so please don't blame Roxio for any misguidance I may provide. And do let me know if your issue gets solved. Cheers from Eugene, Oregon!