thanks for the reply. On closer inspection, AGP slot is different on mb vs. old card and won't fit anyway. If looking at pins/slot on mb, the "key" is closer to left (from back of computer). AGP slot looks like this:
---------ll---------------------- on mb, and opposite on video card like this: ---------------------------ll---------. Is this how I can tell, for instance without knowing anything about card specs, that it is the new standard of 1.5v?