Whereabouts are you based? There's a place in bray that does them for 10 quid. Other than that you can ring up the number of the network its on and say you're going away for a while and need t unlocked to use a foreign sim.
If you've topped up the phone by around €90 (i think ) since you've got the phone i think your network provider had to give you the unlocking code if you call them.
Cheers lads... Problem is phone not mine... Someone gave it to me and locked to o2 ... So can't just ring them up.... Was hopin someone might ave had a code to get rid of restriction...