OK...I have successfully connected the perfect 360s to Mad Catz DreamPads and Sony Dual Shock controllers.  What I am trying to figure out is how to connect the Perfect 360 to my IPac4. 
I know that I can use the pins designated for connection with an OptiPac, and I even know which of the 9 pins is a +5v and which is the ground.  What I need to know is how to connect two Perfect 360s joysticks (in a two player control panel) to one IPac.
I searched and found a link that shows the exact pin specifiations at the bottom of the page, and was even encouraged to see, what appears to be, two +5v power sources.
Can anyone please tell me how to connect a pair of Perfect 360s to one IPac?  Any help would be appreciated.  Here is the link I referenced above.  
http://www.ultimarc.com/ipac2.htmlScroll to the bottom to see the pinout.
Chuck