Problem with DBCO

Hi abapers.

I've been using a DBCON to a SQL Server DB, i configured the conection in Trx. DBCO and it works just perfect.... however, the DB is being changed to another server, now when i configured this new DB the system can't connect to it. I can access it from the network, from the SQL Server admin tool, everything seems to be just fine, but i can't access it from SAP.

I repeat, the original configuration works perfect, when i change to the other server is when it breaks down.

some ideas what might be the problem?

thanx

Jesus