Sap Netweaver Developer Studio Error.....

Hi guys.

I have a problem with Sap Netweaver Developer Studio i have installed JDK and NDS in my pc and i try to make the examples, i have finished to develop the applications(without problems) but i couldn't deploy them, i have a portal server installed and running, i tried to configure the server name in the J2EE Engine Configuration but it had no effect.

I have the next error

Cannot determine sdm host (is empty). Please configure your engine/sdm correctly !