Have a look at these two links:
*Click Once Deployment
You can add a bat file to run these two project simultaneously.
1.In application folder, add two primary output files: x and y.
2.New a text document, and write:
Save it as MyBat.bat file.
3. Add MyBat.bat file to the application folder of setup project.
4.Create a shortcut for Mybat.bat in application folder, rename its name to Start Project. Cut this shortcut and past to User’s Desktop.
After installation, there will be a Start Project in the desktop. Double click this file. It will run x.exe and y.exe.