If you start by clicking on the Florida Residents section of the WDW website (kind of hard to see, up toward the top), a screen will come up and you type in your FL zipcode.
Then the next screen shows "Hello Florida Residents!" and has a section that says "Special Offers Resort Hotels Room Specials". If you click that, then go from there the code will automatically be "built in" to the quote for you and will show:
October - December Florida Resident Offer
Florida Residents can take advantage of great rates on hotel rooms from September 28 through December 23, 2008. Choose your own deal at select Walt Disney World® Resort hotels. Get incredible deals while they last book your Walt Disney World vacation now!
Remember though you have to go in through the FL Res special offers section to see them!
Hope this helps you!