In Reply to: unlocking phone on internet posted by Michelle_goldcoast on Sunday, 31. August 2008 at 16:09 Bali Time:
You can go to unlockitnow.com, I have tried this and it did'nt work for me!
As I said further down, I took my telstra pre-paid to a telstra shop and paid $27.50 for them to unlock it - much, much easier!
Not sure how much Optus charge, give them a call and ask.
Good luck!