I would like to know how much of a difference is the rudder control compared to the cx2. I can fly the cx2 no problem and I want to know any tips on using the rudder control/tail rotor control. Do i need to learn all over again or what?

The actual control isn't really any different, but flying the CP heli is alot different than the CX, but is still very doable. Just take it slow and realize that you can fly your CX like a champ, but you wont be able to fly a CP right off, especially like you fly your CX. Just take it slow like you are just learning heli's and you'll be fine =)

I hope that is what you are asking for =)

there's a huge difference bro, but take your time and you'll be ok. radds will also help a ton, but only if you are militant about punishment:

[link=http://www.dream-models.com/eco/pre-Flight.html]RADDs helitraining[/link]

patience will definitely be a virtue, but also pay very close attention to every little input and it's reaction.