Call Customer service people.
I got same message on may-10-2007.
I call them couple of times and they say they send green card.
Two of them even congratulate me also.
Chanduare, your PD is 10/02 for EB3(India) which does not become current till June 1st.Technically your case is not approvable till then.So how can Customer Service People say your case has been approved (in the current month ?)
Regards