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.
A good guide, just be very careful with circuit board as the conductive rubber that the keys touch is easily damaged.
Also ask yourself, is this a good time to buy a new keyboard ?
As to skins question, there is special spray 'foam' for use with a lint free cloth, or disposable 'baby wipe' style tissues. Just make sure that they specificy say they are safe for LCD/TFT screens.