Hello Paolo and Norman,
Indeed currently we somewhere lack functionality in regards to stored procedures. Basically the problem is that you are not able to use design time to specify the result set of a stored procedure. This said our result sets are always automatically set to object arrays. This is subject to a change and we will be targeting huge improvements in our API. If you look into our road map you will see that we are preparing an ADO like API that will greatly ease the work with stored procedures.
the Telerik team
Q1’11 SP1 of Telerik OpenAccess is available for download
; also available is the Q2'11 Roadmap
for Telerik OpenAccess ORM.