MS Visual Web Developer 2010 Express无法远程编辑或创建SQL表

I've got a SQL database registrated on HelioHost.org and when i try to access this Db via NetBeans, it's fine. I can edit tables, make new one etc. However when I try to do the same in MS Visual Web Developer 2010 Express, I can set connection to this Db, I can see already existing tables, but I can't create or edit them.I've got a SQL database registrated on HelioHos