I recently had mine done by Stuart from Dentcraft and was very happy with results.
DentCraft Website
Telephone: +61 8 9330 3382
Facsimile: +61 8 9316 4250
Email:
stuart@dentcraft.com.au
Another option mentioned by Bakks is Sungard in Myaree - who are cheaper than Dentcraft, but I dont think they offer a mobile service which is what I needed.
If youre confident with a hammer then go for it, but I didnt want to risk stuffing up my pride and joy.