How to connect a receiver to the internet thr

Hello,
I have a current laptop running Windows Vista.

I use a mobile Wireless cellular modem to access the Internet. The modem connects to the desktop PC via a USB port.
also i have sattalite receiver work with DSL "it need to be connected to the internet throught RJ45 cable"

now i want to connect this recevier to the internet through the laptop using network cable"RJ 45"
without using router or hup

i already did this connection but insited of the receiver i did that between to computer

I am sure this can be done but need coaching on how to set it up.

any one can help