Last Month the Japanese try to retrive this mod a little bit more. They played in the at 2pm CET. At the moment the gametracker,com Server Monitorring is off. Hope soon they turn it on. The ranking seems to work.
If you have the latest Battlefield 1942 patches, 1.6 and 1.61b then there should be an 'Custom Game' option in the main menu, then activate the interstate mod there, if they aren't there, then download the patches here: