This is the shelving that I use - except mine has blue painted metal supports and the supplier now furnishes white laminated board for shelving
http://www.tennsco.com/zline.htm
It's nice because it's very sturdy, fairly easy to adjust the shelves (the hard part is taking stuff off them before one can do it), comes in a lot of configurations, fairly easy to assemble - just need a hard rubber mallet or hammer (a hammer could chip the paint), not overly expensive.
The down side - it does look a bit "industrial"