Thank you all for all of the nice comments.
Robin - here is a link to an auction on eBay for the storage units. I bought mine over a year ago. They are really nice - very sturdy and spacious.
http://cgi.ebay.com/32-Hole-Metal-St...QQcmdZViewItem
Each opening is 4" x 4", so I divided up the compartments by using plastic storage tubes I got from JCDanczak. Here is the link to their website.
http://www.jcdanczak.com/our_products/cat_7.html
I have all different sizes to accomodate the various quantities of glass that I have in different colors.
The white storage unit where I have all of my Bullseye is a shoe storage unit I got from HOme Depot.
Becky