Open Project Problem In NetBeans

Hi dear,
I am Mobile Application developer and Develop these application in Java and for this purpose I am using NetBeans because it is best platform for such type of work. But from few days I am feeling this problem any one tell me its proper solution.

Open Projectt
One or more projects do not have the target server set properly.
Right-Click the project in the Projects window and choose.
Resolve Missing Server Problem to set the target server.
Do not show this message again.
Close
Thanks in Advance.
