would be to attach a Firewire DVD burner to your Mac Mini.
Take a look at www.macsales.com for their line of external DVD Burners.
They are really very inexpensive. Firewire is the connection of choice for the Mac, don't go with USB.
Getting an external will save you hours of tears and frustration and be very much cheaper than trying to find a DVD burner that both fits into the space available and is supported by the OS. The existing drive would have to be removed.
ok so apparently my mac mini does not burn dvd's. so i was wondering if it is possible if i can install one in it? and if so where? i have a mac mini running on mac OSX. Version 10.4.2. 512 MB. 1.42 GHz PowerPC G4. hope this helps. so can any1 help me? please. thanks in advance.