What card do I need to display broadband on my television?

I have a ExpressCard/54 slot and I'm willing to purchase a ExpressCard adapter (thinking this one at http://duel-systemsadapters.com/ would work ) well I need to know what the type & what the card is named that plugs into this adapter that will allow me to export internet to my television set. I have an Acer Aspire w/ Centrino Duo core 2.0 GHz, 800 MHz FSB, 2 MB L2 cache. Thanks for you help.