Vista Starter - No DVD codec
Vista Home Basic - No DVD codec
Vista Home Premium - DVD codec included
Vista Business - No DVD codec
Vista Enterprise - No DVD codec
Vista Ultimate - DVD codec included
So that's 4 SKUs without a DVD codec and 2 with. Unless Math changed last I looked 4 is bigger than 2, so most Vista SKUs shipped without DVD codecs. Do you understand yet? Do I need to use shorter words?