osql -S COMPUTERNAME
EXEC sp_grantlogin 'COMPUTERNAME
EXEC sp_grantdbaccess 'COMPUTERNAME
EXEC sp_addrolemember 'db_owner', 'COMPUTERNAME
The basic problem is that your SQL Server/MSDE database does not recognize the account name of the process running the Web page. ASP.NET applications run within the context of an account named computer
\ASPNET. When your code runs, it makes a request to the SQL Server/MSDE for a trusted connection as the user computer
\ASPNET. SQL Server/MSDE probably doesn't know who that is, so it refuses the connection.