Thanks for the words of encouragment, dman! I am using two full-spectrum lamps, one overhead, and one on the left. I am going to re-arrange them to illuminate from the sides, and use another light overhead.
I feel somewhat hampered by the camera's LCD, which doesn't seem to have the sharpness required for me to tinker with the depth of field. I can only tell the d-o-f is off once I load the photos onto my PC.
The camera also seems to be very limited in its macro capabilities, something borne out by a review on DPReview.com
Oh well, back to the drawing board. I think I am going to have to take detailed notes of settings for each photo, so when I do 'hit it right', I can reproduce the results.
Attached is a photo taken on a different day, with more light in the room. It came out pretty well.
George