Quote Originally Posted by Harry Kuhman
(although I'm not sure if the DSL burning program supports burning from ISO files or not).
DSL uses cdrecord which k3b is just a frontend to (as well as to others), so yes, you can burn an iso with DSL:
cdrecord dev=/dev/hdc driveropts=burnfree,noforcespeed fs=14M speed=12 -dao -eject -overburn -v filename.iso (check the device)
or even just: cdrecord dev=/dev/hdc speed=4 -eject -v filename.iso