Welcome to Mousebuzz! I’m sure you will get lots of good information here.
I just went to Walt Disney World Resort
And I priced a package for May 7 - 14 at the value resort (All Star Music) including a family suite, the dining plan, free transportation to/from airport, your park tickets (including water parks and more option & park hoppers). The price was $5200.
The alternate offer that came up was for a moderate resort (in a regular room) - Port Orleans - and the price was $4800.
Try going to the site and choosing different options and reading about the different resorts and the accomodations they all have. You should also order a planning DVD. It also might be a good idea to use a travel agent. Just make sure you use a Disney authorized travel agent, and you should be able to find one that is FREE to use.
Disney is also offering lots of discounts (like free dining) for certain dates through 2011, so if your travel dates are flexible, you may be able to take advantage of one of the offers.
Best of luck, and I can’t wait to hear about your plans!