I think it was a bug in my version. X-cart fixed it so I can now use the "Appearance Options in the Store Admin area." "Display products list in multiple columns (1-3) (leave empty to use standard format)"
Now I just type in how many products per row I want to display and it works!!
It was not letting me do this before. After x-cart fixed it, I decided that 2 products per row looked better, so I went to the Store Admin -- Dispaly products and changed it back from 1 product per row to 2 products per row.
Check it out:
http://www.inyoclothing.com/store/customer/home.php?cat=252