I have some possums (cute native Aussie bush tails) living in an isolated part of my roof. I could bomb them with camphor and board up the hole at night when they leave. This is the recommended solution, or,  I could keep them as pets. I know this is, ahhh, unusual. 
  
I would like to the kids and I to be able to watch them by setting up a infrared light/cam system. Is this possible using CCTV? Hell I could even web cast their antics. 
  
My goal: 
I would hope I could put in a very wide angle close focus (10cm-80cm) camera of some sort, with an infrared light source. I would then like to cable this to my PC or a digital picture frame. If I did get the video to my PC, I could then 
get it on the web _ hope 
  
What is the best way to do this? Can anyone suggest gear. 
Are there close focus CCTV cameras 
Can I get the signal into a form my computer can read (say CCTV -> USB) or do I need CCTV-> Box -> USB to PC. 
Can I cast it? 
  
 - or tell me that it is impossible (say, due to focus), vastly expensive, or point me in the right direction. 
  
Thanks for your help!