Thanks, cek. These were all shot on a Nikon Coolpix 8700 digicam...>
My setup is generally very simple, consisting of an overhead fluorescent lamp and reflector card(s) as required to bump some light back into shadow areas. The fluoro is in a Planet draughtsmans lamp that has a spring-loaded arm that will (generally!) stay where it's put and so is quite versatile in positioning.
The light source is diffused through sheets of draughtsman's tracing material. I don't use a set lightbox as I find them a bit restrictive for the variety of setups I shoot. The diffusion material is a flexible translucent plastic that I either hand-hold over the subject or form into a temporary light tent. I like to hand-hold it as I can move it easily to alter the degree of diffusion as I like, close for heavy diffusion, farther away for less, and angled so as to form the reflections I am after. With this setup the lighting can quickly be altered to suit the subject or the look I want and I can watch the changes through the viewfinder as they are made.
Backgrounds are generally formed from sheets of art paper in various colours and textures, often curved up behind the subject to form a seamless background. Other surfaces and props are used as required.
The camera is always on a tripod. Many of my shots require long-ish exposures.