when you buy one, make sure it is ful lscreen colour pal (640 x 480). i also got a sun shield if they do one, several spare lens covers, and a variety of lenses.
i used a company in ireland,
www.rfconcepts.co.uk
these cameras give a normal composite video output. to record it, you can use a normal vcr, a camcorder if it has an external analogue input, or some sort of digital recording device like laptop of PVR if they have an input for analogue video.
i used to use my camcorder, and then put it on the laptop using firewire, but i recently bought a pcmcia analogue capture card to do it directly for in car stuff. i'll still use the camcorder in the rucksack for ski/board though