[dude87]

I've got FiOS with an Actiontec router and an second router (so I can set up a DMZ and "hide" my home PCs a little better). What you need to do is first configure the Actiontec router's port forwarding. Assign a static IP to the Motorola router and forward your BitTorrent traffic to it on the Actiontec - follow the instructions at portforward.com to do this.

Then you have to configure the Motorola. Assign a static IP to your torrenting PC and then forward the BitTorrent traffic to it on the Motorola router - again, follow the instructions at portforward and you should be good to go. I've even had two different machines acting as BitTorrent clients behind the dual routers (using different ports for each).