I know its Monday and I was suppose to ass the D.I.Y last week, but I never got around to it. Better late than never.
You first need a cutting system, or lettered stickers between 2.5-3 inches big.
and a WORD PLAN!
Mine is listed here below.
I chose this randomly, was the first thing I saw on my planners spine that was right in front of me. You can see my planner here :http://averagelooking.blogspot.com/2010/04/organized-much.html
Then after you figure out what to write, your going to need to cut 4inX4in of wood. I used left over floor board for when i remodeled my basement, but anything of the same wood would work.
So after you got them cut(table saw!), You're going to need your cutting system or stickers and black vinyl.
I used my circut system and alphalicious cartridge.
Find out the letter value of each letter, then stick them right on the middle of the 4X4 piece of wood and the number lower and to the right.
Hang as needed :]
E-mail me if you have any questions.