Replace AdMob Banner & Interstitial Ads With My Own Online Advertising Source

Hi my name is Rob and I own a web development company that has focused primarily on web or internet related things but now we are branching out into phone apps and we need some help. We own several Apps and are looking for someone to help us with the following. My apps have Admob Ads in them but I want to remove those ads and replace them with advertising that I sell throuhj my own advertising company I own. My Banner Ads System: Is a rotating banner (468x60) system that displays a number of rotating banners in or on it's own page in my system. I know in html you can simply echo in an <iframe> but I am not familiar enough with apps to tackle this myself. Interstitial Ads:I sell these in my system though they are displayed individually not in a rotation but the code for the banners page needs to be called in similarly to the banner ads above. AGAIN, I own several apps that I can use this service on but I would like a price for 1 single app so we can see how it goes and where it goes from there. Thanks Rob N SmartWeb INTL