ADODB Connection Problem

I am trying to perform a database operation from a VB 6.0 application (connecting to SQL 2000). The application is running fine in my local and test machines, but it gives the following error in the UAT environment.

dbConn - Nothing
lErrorNum = -2147024770
sErrorDesc = Method '~' of object '~' failed

My source code is:

Dim connectionString As String
connectionString = "DSN = {My DSN Name}"
Private dbConn As ADO开发者_StackOverflow社区DB.Connection
Set dbConn = New ADODB.Connection
With dbConn
    .ConnectionString = sConn
    .ConnectionTimeout = 10             
    .CursorLocation = adUseClient       
    .CommandTimeout = 60
    .Open
End With

The MDAC version is MDAC 2.8 SP2 ON WINDOWS SERVER 2003 SP1. (Check with CompChecker)

I have copied the source code to the UAT environment and tried running it from the IDE, but still the same error.

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One possibility is that you need to install the MS SQL Client tools on the UAT server (http://msdn.microsoft.com/en-us/library/aa197918(SQL.80).aspx). Have you checked the DSN itself using the test connection option? You could also try an DSN-less connection string.

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The error code is a Win32 facility error, 123 ERROR_INVALID_NAME: The file, directory name, or volume label syntax is incorrect.

Sounds like ADO isn't installed correctly.