How to set up a two amp rig?

Dick Brucinson

Dave Sustaine
Anybody of you got experience with playing two amps the same time?
This interests me for a long time yet, but I wonder how I should organize my setup while I have my pedals infront the amp I'm using now, and a few of the pedals I run through the FX loop. One amp.
How do I get the looped effects to a second amp? I mean, they are alredy connected to the ONE amp.
Help greatly appreciated.