So you do have Internet?  I think once everything is installed you'll have no problems.  Internet access is only required to use the Content Paradise window in Poser I would think.  If you're connected to the Web you should have no problems getting Flash.

Not sure how they set up the program registration.  Earlier versions did require online registration.

Good luck.  Sounds like you got it licked.  I'm off to bed.  Early flight in the morning.
-Rª