Iphone Arduino IR remote

Hey!
i was wondering if there are anyone in here With a bit Programming skills. What i want to do is make my own app (or use an existing one) for Iphone and Control my arduino over WiFi. but i also want a ir transmitter wired to my arduino and not just a LED light. I do not have that much experience within Programming myself and thats why i need some help.

So the question is, have anyone done this before and could send the codes or explain how to do it??