Press F7 key to compile the project. This will create User.dll and User.lib files in Release
subdirectory under the directory where you have copied the extracted User.zip files.
Unzip server.zip into another directory on your hard disk
Open file MessengerServer.dsp in VC++.
Create a directory called Release under the directory where you have extracted the files
Copy files User.dll and User.lib into this directory
Press F7 to compile and build the server file i.e. Chatter-jeeServer.exe
Now your server is ready to run. But before running it, you need to set the database references correct and to set the configuration