I'm in WI and for the 2 of us in 2006 it was $2000.00 plus spending money. I'd love to visit every year but it just costs to much to fly there, and takes to long to drive there. Be sure you get the dining plan if you ever go again. It's the best bargain available at Disney World. We loved everything about Disney World! Just didn't have enough time to see everything. Our trip goal was to ride everything, and other then the kiddie rides we did it, some we even rode 10-15 times. Great trip to take with my 14 year old
If you are looking for the dining plan, the best suggestion is to look for their free dining plan specials. You can book in April and must travel mid August through late September. You book a package and get the dining plan for free. They have had this promo for the past three years at least. It's a great way to save some money on food. It includes one table service (sit down), one counter service and one snack (bottle of soda, popcorn, ice cream, etc.) per day of your stay.
The biggest item of expense in Orlando is the tickets of Disney and Universal. And most of the people buy these tickets at full prices. However, there are some very simply tricks to save money on tickets, like, using coupon codes, or buying through ebay. Check out this article. It explains a very simple and effective tips to save money on tickets: