I just went through this process with a large presentation. Once in Word,
you can delete the column showing the slide number, re-set the margins to
give you more room, highlight the table and move the column sides to make
them large. You'll need to play around with the row height to get the
biggest size with 3 slides (portrait) or 2 slides (landscape) on a page -
once you have that, highlight the table, select Table Properties and the Row
tab, select the Specify Height box and type in the size needed for the row
height. You'll have to selet each slide and size it out to fit most of the
box. I played around with settings and printing for 2 or 3 pages until I
maximized the way I wanted things to be. Not hard but a bit time-consuming.