Run PeerSpective. Navigate to the this directory and double-click Launcher.jar, or, from the command line, run java -jar Launcher.jar
Make PeerSpective run at login. If you'd like PeerSpective to restart on login, edit your .gnomerc file to include the line cd path_to_jar && java -jar Launcher.jar
Enter your password. This is necessary to set up the virtual Ethernet device which PeerSpective uses to communicate.
Allow PeerSpective to talk to Skype. Skype will pop up a notification asking for an authorization. Select Remember this selection and click yes.