Don't you just go to the shop which network it is? Like the Orange/O2/Vodafone/etc. shop? I wouldn't know. (Just realised there was no point in posting this )
Best take it to the green market or the grainger market mate, they will do it for about a tenner! I went to some independent shops.......Carphone Warehouse wouldn't touch it, The Link said it would be 45 quid but they couldn't do it, and Phones 4 U said they wouldnt unlock it, but would do me a good deal on a new one worst sales pitch of all time! I ended up doing it myself!
i would've replced the word 'independant' with 'dodgy' there you can get software to do it on the net too, think some people sell it on ebay? not too sure tho...
i got all the stuff but couldnt find up to data s/w to use with phones newer than like 99 The Grang Market is £10 for a unlock...
What type of fone is it? Most new nokia's (and some older) can bve unlocked free... Jus search for DTC3 or DTC4 unlocker.....enter IMEI and network code its locked to and it generates codes for u to type in...