The MacMini combo drive is a cheaper version of Mac Mini no doubt but one might find it really disappointing when it comes to DVD burning.
Well, don't dispair because an easier alternative is here. Just get yourself an External DVDRW burner for bargain price and you'll be burning DVD in no time.
My MacMini combo drive, and IMMATION DVDRW on the USB-to-IDE converter
IMMATION DVDRW Model Number
The USB-to-IDE converter
Price:
1. USB-to-IDE converter: RM50
2. IMMATION DVDRW : RM250 (back in Aug 2005)