Mproko.
Thanks for your help. Have now managed to establish connection via ODBC and have progressed past this error to another when connecting via OLEDB.
Perhaps you recognise this one?
Error Reading The DataBase. Died in UCI:

QLConnect() with SQLSTATE IM976, Native error:0 [IBM][SQL Client]UCI connections to non UniVerse databases is not allowed.System.Data.OleDb.OleDbException: Died in UCI:

QLConnect() with SQLSTATE IM976, Native error:0 [IBM][SQL Client]
Thanks again.