iphone remote control app

Hi, New to all this, need some help.
I have a Sony KDL46EX703 which i linked up with my PC (windows XP) through my home network, via a homeplug. I've set up Serviio as my media server, as i wish to play AVCHD files that are on my PC on my Sony TV. Now this all works very well, am very impressed.
But i want to know if there is an Iphone App available to use as a remote control when viewing the files on my tv.
Anyone know of anything compatiable??
Regards

The only thing I've been able to find is Media Remote. From Sony. It's a remote control app and works with my BluRay and TV. But it is not a DLNA controller.

Thanks, but sony media remote app doesn't seem to work with my sony internet tv, kdl46ex703 its not listed in the app model requirements.
shame thought it would cover my model. its only 2 years old.