There are 2 possible satellite internet options.

One is a full duplex transmit and recieve system. The other is a receive from the satellite but transmit over a phone line.

Where you have a satellite "receiver" the first type (full duplex) probably isn't an option for you.

Also where you don't know if you can do it, I would guess you can't do the second option either. The unit would be specifically sold to you for that function.

It looks like an equipment change for you to do this.