Johnny
I will second what HP has just said to you - I have just recently got myself a Sky based DG834GT from Amazon.
It was locked down to Sky's network, but I used the advice on here to unlock and flash it to Netgear's normal firmware.
From here, I flashed the DGTeam firmware version 1012 on there - all now running and connected to O2.
HTH.
Any queries, please reply back and ask.
Regards
happy37