get this NVR (Network Video Recorder), it has built in POE switch (this means the only cable you have to run is the ethernet (cat 5e or Cat 6).
http://foscam.us/catalog/product/vie...e/category/31/
the HD is not included, but I like that...just go and buy one from Newegg.com or Amazon...no problem.
and then lets' look for a camera....
maybe this one if you want to mount it to outside of your main house.
http://foscam.us/poe-ip-cameras/fosc...ip-camera.html
or just find an indoor POE camera from here
http://foscam.us/poe-ip-cameras.html/
the NVR should be agnostic to camera brand, as long as it's IP, but i can't guarantee that, so if you find another brand IP POE camera you want to use, then it should still work on that NVR.