There are built in security identifiers for windows server 2003. You can
specfiy different ones to launch the services.
What I don't know is if there are diffierent permissions based on the one
you use.
SID: S-1-5-18
Name; Local System
SID: S-1-5-19
Name: NT Authority\Local Service
SID: S-1-5-20
Name: NT Authority\Network Service
Applied a high security template that impacted the SQL2005Express service
starting up as a service. It was using the Logon as Network Service.
If I change the logon to use Local System, then it starts with no errors.
But concerned that there may be something else broke that I haven't
discovered.