Can't connect to SQL via SO Administrator

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I get this with either method of authenication (SA or Windows Integrated).

Setup Configuration: SQL Server 2005 on Windows Server 2008 with port 1433 opened and remote connections via TCP allowed.

POS is Windows XP SP2 with all updates. Has .Net 2.0 SP1 installed.

I am able to 'configue' and connect my POS machines for operations. This is very very strange.

Any Help would be greatly appreciated, S

Ps. Just for grins I did install SQL Management Studio Express -- I can connect via the SSMSE but still can not connect via SO Administrator.

Thank you so much for the info. It was exactly what I needed.

BTW: Just curious -- RMS 2.0 is the latest software. SQL 2K5 is the latest software. Why would I need to install a backward compatibility pack? And further more, why wouldn't it be better documented? Arghhhh

"Jeff @ Check Po> Helper,

I'm pretty sure that even though RMS supports the SQL 2005 database server, it still runs in SQL 2000 mode.