win 2003

No, you'd simply run 'dcpromo' to do a test of the Domain Controller component on a DC. This will run through all the tests.

You need to have the support tools installed first: http://support.microsoft.com/kb/892777.

-Matt

yes in sup tools ive typed:

Dcdiag /test:dcpromo
(i removed /DnsDomain:domain_name.com /ReplicaDC ) though
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The command you use to verify the settings is:
To deploy an additional domain controller:
"      Dcdiag /test:dcpromo /DnsDomain:domain_name.com /ReplicaDC
To deploy a child domain:
"      Dcdiag /test:dcpromo /DnsDomain:child_domain_name.forest.com /ChildDomain
child_domain_name.forest.com is the name of your child domain+the forest root domain. For example, Example.Microsoft.com. Example is the child domain.
When you run the above command look for the message: "Active Directory Test Installation Was Successful"
if you don't see the above message then there is something wrong with the network or DNS settings.

although ive ran a couple of weeks ago dcpromo successfully and ran:

dcdiag
netdiag

and both had passed everything. i was told a command could be used to test which i thought was the above!!

If the DC is installed and promoted, just use dcdiag and netdiag on their own to test.

You can run dcdiag /v /c >C:\dcdiag.log to do a comprehensive test and get verbose output to the C:\dcdiag.log logfile, if necessary.

-Matt