How to stream video/images from CCTV cameras using AVtech 4 ch DVR and Mac OS

Hi there
just joined today
I've got a AVtech 4ch DVR and a Mac running 10.4
I've downloaded Mac server and Broardcaster

I don't know what I'm doing !!!!!

Basically I'm building a house and I have placed 4 CCTV camera's around the building site
and connected them to the AVtech 4ch dvr
I would like to stream the images from the 4 cameras on the internet so my friends and family can watch the progress of the building of the house.

I'm not that great with computers and need my hand holding

I don't even know if my Mac will work with the video equipment I have
the recorder has a USB and network socket on the back

I'm up for any suggestions you guys may have

Cheers
SD