Rocketry!

[Demo]

How does one go about turning a turbine or a piston into a rocket in FSX?  I have messed with the aircraft CFG's so much, and I still can't figure it out... Have any of you guy's messed with this?  'Cuz I gotst one wicked idea of putting a Cessna in orbit! (Copyright, pattented, MY IDEA!  ;D )  Hehe, help would be highly appreciated, lets get this figured out!  ;D Tchus.

[SkyNoz]

You take the total thrust provided by the engine, make a ratio of Thrust to weight equivalent to 10/1. Edit the max cruising altitude to 100,000,000,000,000,000,000,000,000 excuse a little exaggeration he he. Edit max weight of aircraft to fit the ratio, then your ready to hit space in a modded Turbine engine!