Deleating created projects

1 project i have created and want to deleate the same .Its in created status only with 1 WBS,1 NW and 1 Int Act. when iam trying to deleate ..Iam getting the messege

"Versions already exist for network &; deletion not possible" Delete the project versions first.

Tell me the path how to deleate the same.

Regards

N.Raju