Entity Framework - regarding edmx

Hi,

   I  have loaded .net famework 3.5 service pack1.after that  i installed visual studio 2008 Team system.But iam not getting  .edmx  file.please please tell me  what i do for that file. 

What edmx file? An edmx file is an Entity Data Model (EDM) file that is created for a project as in How to: Create a New .edmx File (Entity Data Model Tools).