Full instructions on when and how to use the Base Skins can be found on
the download page, please ensure you read the page in detail before
downloading the Base Skins as it will save you problems in the future.
Currently there are two versions of the Base Skin one solely based upon the Default FM2011 Skin and another one with the Background Changes re-enabled thanks to Radestock.
If you have any further questions on the Base Skins please ask any questions in the Skinning Hideout on the Official SIGames Forums.