First step is to install Road Runner using the installer by W3bma5ter.
Get this working with the basic Brushed Metal skin and then install symplistic.
Installing symplistic should be just a case of extracting it to the skins directory of road runner.
Then just press skin on the main menu in brushed metal, you should see symplistic listed, click on it, you should then get a preview then press select and you should be done.
eun rrconfig to set up paths for music, video GPS etc.