Without going into details: Covert the dds file* to a photoshop or paint file (with a program called DDS Converter 2, is in the downloads section: http://forum.emergency-planet.com/index.php?/files/file/295-dds-converter/), edit with one of them -or another program similar- and after editing convert again to dds file and save it in the place that was, overwriting the original file. And you have your own skin *That file is located for example for doing a reskin of an ambulance in LA mod in Emergency 4\Mods\Los Angeles Mod v2.0\Models\Vehicles\01 LA Ambulance Hope this can help you PS: for more info see the tutorials or just ask. Edit: matte31 you explained before me, when I started writing it wasn´t posted