Oooh, the possibilities...
I would assume that you're talking color photos here, and I'm also assuming that you're taking pictures of naturally finished (not stained or painted) pieces.
First: On lighting. Do not use a direct camera mounted flash! If you must use an on-camera flash, then make sure you can bounce it off a white card or similar. Direct flash creates harsh highlights, especially on glossy or semigloss finishes. If you have a multiple flash setup, just go with the good old key/fill routine. My preference is for natural lighting from a north-facing window.
Next: On backgrounds. John Taylor mentioned the old slide projector screen---although this is convenient, it also reflects a _LOT_ of light. If you have access to one of these, I would recommend using it as a reflective source for fill lighting when working in natural light. As for a background, I would recommend a contrasting earthtone or a light value of a cool tone. Broadcloth is easy to acquire at wal-mart, is relatively cheap, and can be draped over just about any support. Unbleached muslin can also be acquired pretty cheap, and if you want a different color, you can get a package of rit dye to color it (although the saturation resulting in an unbleached muslin is going to be lower than if you used bleached muslin). Make sure that the support over which you are draping your background cloth is large enough to fill the frame. Also, as an aside point: Make sure to use a setup where you won't be casting your own shadow onto the work.
Good luck,
Henry C. Gernhardt, III