Question about IPN4320 and NVG589

Hello, I recently upgraded to the Max Power package internet and with it came a switch to the NVG589. Before that, I had moved to the modem to a different room and had no problem relocating using a standard telephone wire. The NVG589, however, only wants to work with the original data phone line that it was installed with.

My dilemma is that I would prefer to have my devices in a different room but I only have 1 ethernet cable long enough to run from the modem's location to my entertainment area. I am trying to minimize my costs as much as possible so I am wondering

A) does the IPN4320 receiver work if it is connected to a router connected to my NVG589?

and 

B) would another option be to buy a longer "data" capable phone line? (of which I can not find anywhere near me)

Just for clarification, I do not wish to go wireless if possible as 3 of the devices I wish to connect with a wired device are for gaming.

Thanks for your time