Yep, it is possible.  Here is one page that may or may not be over your head:
http://marvin3m.com/video/pacman.htmOr, do I google search for multipac 96 in 1.  This is a much easier route.  Me personally, I don't like the idea of modifying a board, I would much rather have something that can be removed and easily returned to its original state.  I'm sure there are other ways as well.
woody