A custom service which runs as Local System on a Windows Server 2003 server needs to login to a database running on a local instance of SQL Server 2005. SQL Server services runs as Network Services, so actually database login is not allowed for NT AUTHORITY\SYSTEM. Please note that NT AUTHORITY\SYSTEM has already sysadmin Server role.
How do I grant database login permission to the NT AUTHORITY\SYSTEM user on a local SQL Server 2005 Express when it do not run as Local System?