I just booked my condo at Windsor Hills. The two websites I liked best were vrbo.com and homeaway.com. It's hard to know which neighbourhood to choose. I chose Windsor Hills because it's the top-rated on tripadvisor and seemed to be the favourite of the DISers. It's also super close to Disney. Once you know which area you want, it's easier. If you have any questions, you can email the owners of the condo or call them before you book anything. Condo prices vary in a resort by the interior decorating and proximity to the pool. Good luck! It's a little overwhelming at first to be sure. Keep a list of the ones you like and which site they were on.
BTW: You loved it that much, huh? LOL It's addictive! How did the surprise go?