abilityonline

When I built my house 8 years ago, I ran RG6 cable to specific areas of my home in the case I wanted to install CCTV system. After some area break-ins I now need to install something. Some of the runs are rather long and I'm not sure I trust a wireless system. Considering I only having RG6 installed and not the BNC power cables I have a couple of questions. 1. how would I separately run power while still using the existing RG6 coax? I would need to run this from separate power sources as I wouldn't run this the whole run. 2. Would this setup require I run analog? I was looking for something like this from Costco. http://www.costco.com/Swann-24-Channel-Full-960H-DVR-Security-System-with-2TB-HDD-and-14-700TVL-Cameras.product.100070309.html 3. Through some effort I could run cat5 (I already have it for some locations). Would this be a better approach? 4. Do you have some residential systems you could recommend that fit my situation? I'm very handy regarding install but I would like to find an out of the box system under $2000

My Internet is average. What would this do to my bandwidith and web access putting this over cat 5/6?