I am soooooo glad you replied .... and i am shy as well that u put you in soooooo much trouble writing all these stuff.... OF COURSE I WAS KIDDING!!! lol but for sure it is X and not ten ... if you saw any commercial or heard at any interview for the mac os they pronounce it X ... not ten ... But to be honest for the rest ... you are very informed on the X- Windows system .... well done! CKougar