Robert,
That's a pretty decent camera. You should be able to get very nice photos with a little practice.
Incidentally, I thought the shots were actually pretty decent from an artistic/compositional standpoint. But since you're showing off a product, the goal has to be flattering the subject, not channeling Caravaggio. :D
A couple of other tips: Be sure to keep your ISO low. Some cameras default to auto ISO, which means you don't have control over how much noise is in the photo. Compact cameras tend to get pretty noisy over 400 ISO.
Try setting the camera to manual, too, so you can control exposure. Under soft florescent lighting, I might set the camera to ISO 200, with an aperture of f/4 and a shutter speed of 1/15 or 1/30. Use a tripod, and look at the LCD to judge the exposure. When it looks good, it is good. :)
Josh