fingers crossed that I set up the cameras correctly, I've hit a wall on the last stop, the DVR! 
  
How in the world do I see the DVR screen to set it up?  Is the only way a TV Monitor?  I bought a Jcreate5 USB to HDMI adaptor to hook it up to my IMAC, but I am still clueless on how to switch from my deskstop to the DVR screen. 
  
Anybody know what I'm doing wrong?