Adding a third homeplug adaptor to a network

Hi
I currently have this kit:
http://www.amazon.co.uk/D-Link-DHP-...8F6U/ref=sr_1_1?ie=UTF8&qid=1307026314&sr=8-1
with one plugged into my router and one plugged into a computer on the other side of my house. I would like to add a third, so that one plugs into another computer somewhere else in my house. I was just wondering if it would be possible to add one of these:
http://www.amazon.co.uk/D-Link-Powe...LX76/ref=sr_1_2?ie=UTF8&qid=1307026380&sr=8-2
and for the third homeplug adapter to use the first one (plugged into the router) like the second one?

Thanks in advanced.

Sam