Folding Bike Seat Post Replacement I have a folding bike (basically this Origin8 model) and the seat/seat post got stolen.

I haven't replaced a seat post before, but this is the only replacement post I could find, and I'm not sure what else I need besides a saddle.  It doesn't have any sort of mounting apparatus, so I'm not sure what kind of saddle I need or if I'm missing really important hardware.  Is there a specific seat I should be looking for or do I need to buy mounting hardware?
You want a separate saddle clamp, that clamps round the top of the post and the rails of a standard saddle, something like this.

See also http://sheldonbrown.com/saddles.html#seatpost

http://sheldonbrown.com/harris/seatposts.html (scroll down to 'Traditional "pipe type" seatposts, use with separate saddle clamp'.)