Would a size 12 boot need a mid wide or wide board?  And wat size binding would that size boot need?

Alright, well im 5'6 or 5'7 and prolly weigh 130-140 or so.   I used your snowboard size calculator and it says I should get  a 152 cm board.  That seems a bit long cuz i think a 148 would go right above my chin...  But either way, I looked at the Burton and Ride sites and for wide boards they pretty much only make them in the high 150s or 160s.  Wats up with that?  Are there any brands that make sizes like that? 
Ya know

Yeh, you are going to want a bit of a lunch-tray.  I came up with a 150cm for all-around board for you.  I suggest a mid-wide, not a wide, so a waist width of 25.3 to 25.7would probably be right on.

Koool thanks sounds good. 
Wat do you mean by lunch tray though? lol

"Lunch tray" means short and wide.

In order to get into the width range you need, you are going to have to settle for at least a 153 or 154cm board.  Here are some boards you might like:

BOARD NAME & LENGTH, WAIST WIDTH
Burton King 153, 25.6cm
Burton Warhol TWIN 154, 25.2cm (not Warhol Custom!)
Rome Machine 154, 25.8cm
Forum Bully 145, 25.1cm
K2 After Black 154, 25.9cm