Sql Express

Hi

I am new to this forum .
I am running through few problems for sqlserver account settings .

I) My registery key entry for MSSQLserver just has a client folder .
2) My sql server configuration manager just has
sqlserver 2005 services , native client configuration and 2005 network configuration.


I can't see any server name or databases under it.


3)I normally work on EMS lite so I can see my ./SQLEXPRESS as server and databases under it and i can create logins etc ..I assigned db_owner role to one of my recent created database.
but when I try to connect it says :

The user is not associated with sqlserver connection.

5) i have sqlserver express service running, vss and sql server browser running.


I googled and searched for the solution and it says the authentication mode should be turned to mix mode form win authentication.

But from where. Have i missed some installation .I am able to connect to my other database from EMS.





Please help me out.
Thanks in advance
SJ