O2 is pretty decent I think...Or you could go with BT...They are the only 2 I know anything about

My house has BT, and my sister's flat has O2 (they had a discount of like ?5 if you had an O2 Mobile, so she bought a PAYG phone for ?12, so definitely worth it

).
For customer service, I think O2 is better
And as for your MAC address, it should be rather simple. If you login to your router settings and check your devices list, you should be able to find your computer relatively easily, even if there are other people using it

But if this doesn't work for whatever reason, let me know, and I'll try and talk you through the longer method (if I can remember ).
Are you using a PC or a Mac?
Bookmarks