thanks tejano!
and well, i might as well ask while im here:
i see a 3 bolt chainring from a seller on ebay, and although they dont list the BCD, they say "10 cm hole to hole".....im ASSUMING they are talking about a 116 BCD, which is 10.1 CM.......is that a safe assumption? they dont make 115 BCDs do they? and if they did, would a 1 mm bolt to bolt really make a difference? im assuming they just quickly measured it and it looked like a square 10 cm to them....