I'm not sure of Sonics capabilities; I know it's limited but it should be OK in this regard.
Copy the contents of the mini disks to hard drive first. Make a folder on your desktop with as many sub folders as you have mini disks. Call them folder 1, folder 2 etc.
Copy the contents of mini disk 1 to folder 1. Copy mini disk 2 to folder 2 etc. Now have Sonic make a DvD out of the contents of those folders.
If you wish to make a DvD that is viewable on a home player, then we'll probably need to take a different approach.
If you're thinking of buying DvD burning software, have a look at [highlight]
DvDSanta[/highlight].