Mysql with LINQ

Hi,

       I successfully select a table using LINQ with SQL Server 2005. When I try to drag a table of MySQL on .dbml i got "the selected object s use an unsupported data provider mysql" this error message.

     Can you tell me what should I do? I refered some web sites. Some web sites tell to puchase there .dll file. Like Devert. I don't want to purchase it but has to run my code MYSQL with LINQ

thanks