Greek sim cards laptops & the internet

Orange and Nokia charge £20 for unlocking the phone and have a 3 week waiting list and nobody wants to unlock the N95 on the net so I've paid online for an unlocking code for my old 6230i phone and intend taking that to Corfu for use as a modem unfortunately once again the code doesn't work. The support says wait till I have the Greek sim card I want to use then insert that and the code then if that doesn't work it's tough and no refund.I should say it was only £2.99 not £20. The current and only pay as you go data charge for a bundle from Orange is £42.55 for 10 mb or pay for what you use at £8 per megabyte  which has gone up apparently because they were forced to reduce their roaming charges on all contract phones. This bit is actually good news ie 38p/min outgoing 19p/min incoming voicecalls and texts are 30p each to send and free to receive but none of this applies to pay as you go phones which are still expensive.