I did think about using Open dns but like i said i thought there was some long winded thing you had to do like register and do all sorts.
A quick google answered my question
'The OpenDNS server addresses are: 208.67.222.222 and 208.67.220.220. You can use these numbers without setting up an account at OpenDNS.com, but if you create a free account there, you have access to instructions, a knowledge base and support help.'
Were they what you used?