You really don't need anything too fancy.  I took this picture with my iPhone...

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As you can see, it came out pretty well, could be better, but not bad either.

My set up is pretty simple.  I have two desk lamps clamped to my bench and a piece of white paper from Wal-Mart.

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I spent less that 30 seconds setting it up and I just took this picture...

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The other thing you might want to consider is a free photo editing software like GIMP.  This is a great too for balancing colors etc.

http://www.gimp.org/