3 Monitor output on Radeon HD 4850?

I have a very unique setup I want to work with my Radeon HD 4850. I have a 52" HDTV, and 2 19" monitors. And I want them all connected at the same time. So What I did is I connected my HDTV (and my sound) through the 2nd dvi port on the card. I then bought a dvi splitter for the second port. I plugged in my two 19" monitors to the dvi splitter. The only output I get is to my HDTV. I get NOTHING through the splitter to my two monitors. Anyone know how to get this to work??