wifi control

Hey all,
I am currently working on a project (forgive me i cant go into specifics as yet) buy i am wondering if it is possible to connect an arduino to a rc controller (so i can keep the range) and control it via the internet from a second control terminal. I am only starting to get into arduino and have had some success with simple programming. I have an arduino uno already. I am wondering if i can connect the uno to the controller and what other hardware i would need. any other ideas about how do accomplish this would be great too. thanks for your time.