If Podium 1.x is loaded in SketchUp you can retrieve your serial number by going to the Ruby Console and entering - puts Sketchup.read_default("PDM", "serial", ""). The Ruby console will then display your serial number. If you do not know your serial number and SU Podium is not loaded into SketchUp contact - email@example.com to ask for your serial number. Please give us as much information as you can including the name of the person who purchased the license.
Version 1.x Serial Number