In the SDK of Project Server 2007 and in the deployed solution of Project server 2007 . I can't found "Microsoft.Office.project.server.pwa" DLL .
Kindly tell me where I cant find the "Microsoft.Office.project.server.pwa" DLL.
If you can't find the DLL under the program files, then it is in the GAC. This means you have to develop on a project server, preferably in a test environment.
You will have to develop solution with a project server 2007 environment. I would suggest creating a VM and installing the simple standalone version when you run the wizard.
PS. This is the best place for posting question. I noticed that you had it listed twice.