With the Panasonic cameras, all you'd need is a router to connect all of them to. You'd need to configure it properly (firewalls, etc.) but that's easy to so if you follow the directions. Best bet is to get a broadband router that accepts your Ethernet cable from your cable modem. Then there's a Cat 5 cable running from each camera (unless you got the wireless ones) to the router. Once you've configured the router the right way, your PC and all your cameras would have internet access. Again, you have to keep security in mind. Don't want hackers to find you an easy target! At that point, you just need a dynamic DNS server to get your cameras recognized on the web. Panasonic offers 1 suggestion, which turns out to be Intecam (see below). By the way, these cameras need to be plugged into a wall outlet for power. The cameras are configurable through any standard web browser.
With the multiple Inetcam configuration, you have each camera with its own cable running to a little video switcher. It has a serial connection on one end, and an RCA cable end on the other, with 4 ports for Ethernet cabling for the cameras. You do need a video capture card that has an RCA port to hook in to. These cameras don't plug in, they get what little power they need from the Cat 5/switcher. There’s a software package that comes with the system that lets you broadcast audio & video, set up recurring FTP's of the images, set up motion detection, etc. Fairly impressive set of features for a cheap (relatively speaking) package.
Quality is good on both, although the Panasonics are certainly better, but they're more expensive.
I have both on the web; check them out if you want.
Panasonic Camera. If you have a Mac, the Full Motion camera won't work (at least, not with Explorer). You may have to let your browser install an Active X controller, just let it. There are other options availble for controllong the camera, too. You can change the size, see an archive of captured images, etc. We just don't have them turned on yet.
The Inetcam is currently off-line, as I am in the process of installing a new workstation in my office. I should have it back running tomorrow or Friday. I'll post that link as soon as its on-line again.