First piece of advice: Register!
Second: Assuming these are small objects, about the only way to get completely shadowless lighting is to make a "light tent." You'll need to buy a sheet of translucent white material, such as frosted drafting film (available at art supply stores) and shape it into a cone big enough to enclose the object with a fair amount of free space around it. Cut a small hole in the side of the cone just big enough to stick in the lens of your camera. Then position lights (you'll need at least three) around the cone so that they light it from all directions. A good kind of light for this kind of thing is the type of screw-in fluorescent bulb that goes in a standard lamp socket, available at hardware stores. You can put these in clamp-on reflectors and get a very soft, controllable light.
