Check if the Office Sharepoint Site Collection feature is enabled, you need to enable
the enterprise features in Central Administration before you activate at the site level.--Cheers
Proposed as answer byV284Friday, March 18, 2011 7:04 PM
If you wish to stay with the current version then you can try the SharePoint web services for lists which would be one method to connect -
http://<Site>/_vti_bin/Lists.asmx