Monopoly 3 or The game of life

Hi there.... i have recently downloaded the game of life and monopoly so i can play with my girlfriend...soon to be wife... hence the name.... through netowork play and we are unable to connect..... we both have tried deleting our cookies and temp files and even turning off our firewalls and it still wont let us connect to eachother... we both go through cox but her gateway is 192.168.0.1 and mine is 172.168.0.1 could this be our problem? any help would be greatly appreciated