rsperge: First you have to get used to this kind of a/p 727 a/p wasn't computer aided as you would find on an A320, B737-300 of nowdays. Lots of work to do with this a/p; Almost to the point of not calling it an a/p; In comparisson with modern a/p systems. Read the manual.

To set your altitude dial in the number you want on the altitude setting window. Right click for more (+) and left click for less (-). Took me a while to figure this out  8-)

Now on your pedestal you have another a/p the left dial is your rate of descent/ascend option; Again here right click (+) Left click (-). Watch your speed!!!! I can't emphazise this enough  ;) In my case it tends to overspeed easily. If this is your case too use your airbrakes to slow down, Butr watch your stalling speed, because the 727 has the engines in the rear stalling is easy; adjust precalculated rate of descend some distance from your destination..KEEP IT SMOOTH. Use your joysticks' . To use your windshield wipers activate form overhead panel. Lastly read the manual. Good flights!