open up the Moniloth map in the scenario section in the folder (i think scenario folder)
go to the import manager, look down to where it says mappreview, douvble-click it, and look at the custom path. Get an image u want imported to ur map (copy and paste that custom path) the image must be a certain size. ( you may have to convert the image into a .BLP, for this program go to:
www.infoceptor.com )