In addition to what the above posters said, I point you to this thread of resources for your beginning adventure in coding addons.
http://www.wowinterface.com/forums/s...ad.php?t=43699
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff,
The Tao of Pooh