QUOTE(JohnDemolition @ Feb 25 2006, 12:52 AM) [snapback]31218[/snapback]
but when i try to register, it says that it blocks all free providers...
Depending on how important this is to you try the following.
Buy a cheap email account. Hotmail offers a Free, and Paid ($10 I think) accounts. Then once you're registered change it the way Andavari suggested to a free account. Then cancel your paid account.
I'm not sure that it will work, but if you really want to register with that forum it may be worth it.
EDIT: I just thought of something that may work for you. Call your IP provider, and ask them about their email accounts. My provider didn't tell me that I had one. I had to call to find out. So it's possible that you are already paying for email service through your provider without knowing about it.
Good luck!
K