wireless CCTV

Yes. Make sure that you get wireless links with channel select switches and put each link on a different channel. Get 6 channel units, if you can (see below). There is also potential conflict with other wireless devices - cordless phones, computer links, etc.

Two solutions: You don't. There is no easy way of putting your DVR on a network. What you needed was a 4 channel card for your computer (or a computer) and use the computer as the DVR. Having got the data in the computer, it is easy enough to move it around a computer network to where you need it.

You work around it. You use another "wireless link with remote extender", taking the video/audio from the DVR and "broadcasting" it to near to the computer. You take the video/audio from the other end of the link into the computer (you will need a suitable video input (say a TV card, or equivalent). Now you can sit at the computer, remotely controlling the DVR (using its own remote via the extender) and watching/re-recording the output on the computer or sending it onward through a computer network (or putting it on a web page, for instance.

If you wanted to be really cool, you could use the computer to generate and send the remote control signals to the DVR, via a small IR-out dongle pointed at the extender. But it needs to be the right dongle (don't just buy one and hope..)

However, if you can only get 4 channel wireless links, you will only be able to use 3 cameras, plus the "wireless link with remote extender".

Well, there is a work round, this time. Sounds a nice place..

HTH Sue