MLG MAKES OVERWT TKOF FOR RWY USED.

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OVER-GROSS TKOF; ACTUAL WT 131746 LBS. COMPANY ACARS COMPUTED MAX TKOF WT 132700 LBS WITH ENG BLEEDS OFF. WIND WAS 190 DEGS AT 6 KTS AND WE USED RWY 19 WHEN COMPUTATION WAS FOR RWY 10 (3000 FT LONGER). WE FIGURED LATER THAT WE WERE ABOUT 2000 LBS OVER-GROSSED FOR THE RWY WE USED. CONTRIBUTING TO THE PROB WAS THE CONFUSING WAY THE COMPANY CHOSE TO PRESENT THE DATA. ATIS ACTIVE RWY WAS 19 (THE SHORTER ONE) AND NO MENTION WAS MADE OF 10 BEING AVAILABLE OR NOT. ON THE ACARS; 2 DATA SETS (FOR 2 RWYS) WERE DISPLAYED; FEATURING IDENTICAL V-SPDS; ASSUMING THE USUAL FORMAT; WE FIGURED WE WERE OK FOR EITHER RWY. USUALLY IF THE SHORTER RWY IS NOT LEGAL; WE WILL SEE A DISPLAY SUCH AS 'VIM V1 VR V2 FLO - RWY 19 0 0 0 0 FLG - RWY 10 144 144 148 155. THE DISPLAY ACTUALLY SHOWED: VIM V1 VR V2 FLO - RWY 10 144 144 148 155 FLO - RWY 28 144 144 148 155. PRETTY UNUSUAL; I FELT; TO SHOW BOTH DATA SETS FOR THE SAME RWY (OR RECIPROCALS OF THE SAME PIECE OF CONCRETE) WHEN THE ACRAS MADE NO MENTION OF THIS RWY EVEN BEING AVAILABLE. YOU CAN BET THAT I WILL BE XCHKING THIS ACRAS WIDE-BODY DATA MUCH MORE CAREFULLY IN THE FUTURE; ESPECIALLY AT UNFAMILIAR ARPTS. MANY OF OUR SMALLER STATIONS SEEM TO HAVE THEIR OWN WAYS OF OPS; DIFFERENTLY FROM THE MAINSTREAM.