Getting and setting table column width

I have a requirement to have the columns of two tables arranged vertically one over another to line up. Each table has 12 monthly buckets and, for example, November in the upper table has to line up directly over November in the lower table. I would think that, in WDDOMODIFYVIEW, each row of each table has to have the column width examined and set to the maximum of either table. Can someone tell me how I might do this?