I want to print business cards on an 8"x8" piece of paper...?

I want them to be little squares, like 2.6666 inches square. When I go to Page Setup and set the paper size to a custom 8x8, only the TOP ruler displays that the page is indeed 8 inches. The vertical ruler shows that the paper is only 6 inches tall! It's so weird. I want to essentially insert a table that is 3 columns across and 3 rows down, so I can make 9 biz cards on each page. Well, it won't let me do this- it keeps making the cells rectangles, instead of the 2.6x2.6 that I am inputting. Another thing is that I am finding that when I finally post the text that I've pre-written (you know, everything I want all nicely laid out on the business card) it WON'T center within the cell. I even highlight the text and hit the "center" button, and it still is all cut off on one side. I just feel like Word is being very UN user friendly! I'm usually good with the program. Ideas on how to make 9 little even squares to create cards from an 8x8 paper would be great! Other programs to use, etc??