What, exactly, is the problem? No longer have the installer? Not recognizing your serial? Bondware is supposed to have a record of every buyer. What did Support tell you? 

Though you will have trouble getting Poser 10 to run properly, and it's not Bondware's fault. Poser 10 used Flash to run the Library, and Adobe has since killed Flash. I believe both Apple and Microsoft have reached out over the net to disable it, on machines that still had it installed. There are some workarounds, but it's probably easier to just buy Poser 11.