There was a thread on disassembling the hardtop recently, I think it may have been on BoxsterRegister.org or renntech.org. I can't access them right now, but I remember it had a scan of the service manual page for the hardtop that showed all the parts and how to disassemble/re-assemble. Sorry that I can't find that link for you, but it is out there somewhere
Edit: of course I fouind it seconds later:
http://boxsterregister.org/showthread.php?t=3607&highlight=hardtop
I think registration is required.
DOH I see that this was mentioned earlier.... Sorry.