DH has just recently dissaolwed allow_url_fopen. It doesn’t work at all on DH. I’m not exactlu sure if this is the same as waht you are saysing, but I think it is. If that’s the case just search this forum and you can find lots of posts where people have a solution with this curl thingy.
As far as Movable type goes, it works very well here at DH. A lot of people, including my self, use it. They also offer a once click install of Word Press, and the latest veriosn that came out in the last month is very impressive.
PHPBB is also a one click install and works very well.