SQL Server Authentication Problem

I have a SQL Server login called supportuser on a server.  The problem is that whenever I try to log in using this account (either through QA or C#) I get this error:

Unable to connect to server XXXX
Server: Msg 18452, Level 16, State 1
[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user 'supportuser'. Reason: Not associated with a trusted SQL Server connection.

Mixed Authentication IS enabled.  I have checked this both through Enterprise Manager and through QA (I can log in using Windows Authentication).  Everything that I have found either deals with Mixed Authentication or a guest account, neither of which help me.  Does anyone have any ideas.  Thanks.
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What edition of SQL Server do you have,  what service packs what operating system?
Duane LawrenceCommented:
You need to isolate where the problem is.

Go to the machine the database is running on
Can you log in manually using that user id?

Go to the remote machine.
Can you log in manually using that user id?

It sounds like the computer that is connecting to your database does not have the correct Active Directory setting.  You can give such in such networks or computers "trusted connection" status in Active Directory.  I can't help you do the Active Directory setting, but I am sure there is a group here that can.

duckcreektechAuthor Commented:
It is SQL Server 2000 Standard running on Server 2000.

I was able to Remote Desktop into the server, open up QA, and log in using the supportuser login.  So how do I set up trusted connection status on the server to allow other domain users?  Thanks.

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duckcreektechAuthor Commented:
I got it working.  Thank you.
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