http://www.cameraworld.co.uk/digital_cameras.asp
Try this site, a good selection. Try to ignore the need for a higher pixel camera, you wont need it. Yes its true the higher the mega pixal the better quality of picture, but you wont be able to tell the difference between a 3, 5 or 10 megapixal camera.
The Fuji A500 is a very good buy, 80 squid you get a memory card and case, bargain. I bought this camera for the wife for xmas and she loves it. You need a camera with ease of use, some can be a mindfield of technology, but there is a wide choice.
A few things to look out for, make sure the camera has a view finder( the thing you look through) This saves on batteries, if you only have the lcd screen to view a photo through your batteries wont last very long. Also note the cameras at this price seem to be small ( maybe just a bit bigger than a mobile phone) so they can be quite fiddly.
Anyway happy hunting, I remember my first digi camera at around 100 squid, it wasnt long till I upgraded to a better one at about 150 squid, now im on a digital SLR at 600 quid plus new lenses at 200 quid a throw so can become a very expensive hobby.
I only love pictures ;)