Perhaps check your datasources/odbc from the control panel and make sure it's setup correctly there? (If that's the way you're doing it).
I suppose it's possible that there is a security or firewall setting that is blocking you - can you verify that you have the proper rights to get to the location where the tables and views reside?

>Hi Victor!
>Yes I have ODBC installed. As I said: it worked well under XP.
>Regards Joachim