While I am waiting for my new Nikon D7000 to show up this week, I built a lightbox from some directions I found on a DIY forum. Total cost was about $32 (vs $100 or more I see to buy them). Could have been under $30 easily as I bought WAY too much Muslin cloth.
I switched the light I had for a daylight bulb, which helped a lot, older bulb gave everythign a sickly yellowish tint.
Looking forward to learning from you guys when my new SLR shows up (I have a Nikon 105mm micro Nikkor for a macro already).