first, download the latest version, v1.9g, from the link above or main site.

then make sure your license is valid on both machines

run your wows normally on both machines... they should then be in the keyclone list being managed.

then, to the right of the 'connect' button, is the command area. on one keyclone, put the iport of your other keyclone in there and hit connect.
the ip and port for the other keyclone can be found on keyclone's titlebar