Well as time progresses into blackness of no TV

, I am kickin the K-Box idea. Like everything else there is a learning curve and some unfounded answers to questions I have regarding A WI-FI hookup. Why, WI-FI do you ask? Well mainly, security.
The K- Boxes have the hubs and networking hookups that have ethernet ports but a general WI-FI hookup like mine consists of my Antenna, a WI-FI card that is attached to the antenna via a 2 foot cable that is N connector to USB. The USB goes into the card then on the other side of the card is a likewise USB output to attach USB extension cables to the USB input to the computer.
My question is, with this particular setup, saying that I do not attach a 4-12 port router or hub can I not just buy one of the cable accessories that they sell that change the USB cable input to a serial input, that goes directly to the K-BOX . That way I can go from my USB to serial input directly to the Prodigy reciever without all the dongle,networking adapters,IHUB's that only would drive my price up and in essence, if used in a regular configuration this way, in a cable/DSL internet hookup, would only jeopardize my safety from prying eyes and possible law intervention. Unlock this question.

Whaddu ya say? Will it work or not? Has anyone tried this or done this? If not is there or what is the best, cheapest way to secure my safety in WI-FI and save from buying unneeded accessories?