Hitec optic 6 sport receiver setup

[helibo1]

Hi guys, I am making an acrobatic 6 ch plan, I have fully setup the body, I just need to do the electronics, I have a hitec optic 6 sport TX and have setup the model slot for the acro plane, but then what do I do e.g how do I "bind" the receiver to the TX, because the instructions just tell you how to setup the exp etc after showing you how to setup the slot, it does not say what to do with binding the receiver.

Also, I know nothing about crystals, do I need to get a specific one for my TX and keep on changing the crystals in my TX to work with my heli AND plane? and another quickie: I have a spare 4ch RX from my old night ranger heli, would my TX work with this RX even though TX is 6ch and RX is 4 ch?

Thanks alot, Lincoln.