Database Diagram in MSSMSE

after creating database in MICROSOFT SQL SERVER MANAGEMNET STUDIO EXPRESS, when i right click on diagram node, a menu appears with these 2 options :

1- working with sql server diagrams

2- refresh

how can i make a new diagram unless there is no such thing there?

I do not have the management tools for express loaded but you should be able to do it. When you do go to the database and expand it there is a diagram node. When you first expand this the engine should ask you if you want it to create the objects. You select yes then you are able to right click and create a new diagram. The other option is to use visual stuido 2005 to work with the digrams.