Bike fit / correct riding position

Here, darling.

http://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO

That would give you a better idea about the adjustments of the seatpost, saddle, stem etc.

Careful with that ^ In theory it's good, but it relies on you making some very precise measurements. It's given me some pretty funny results when I've tried it out*.

*Though quite possibly this is due to my inability to use a ruler.