Welcome bjwels. What I use is 3/4" by 5" wide white boards (any length you want) that I get at Home Depot. I space the shelves 6"'s apart to give the look with no space between the shelves. Here is a sample.
[img]http://im1.shutterfly.com/procserv/47b4d737b3127cceb6ee1c97a11b0000003610[/img]

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Scott Shipers
Kansas City, Missouri
WANTED: Sooner Queen

Scott Shipers
WANTED: quart picture cans