Works fine for me.Remeber to choose the date of the day before you check out and pick the appropriate room category that matches the resort you specified.The results pop up in another window.
I assume that you are talking about the DVC Point Calculator that you can access from the DIS Home Page.
I've used it several time just now and it has worked every time. Be sure that you do a couple of things.
1. Select the resort in the first line.
2. In the date be sure and use "0" in front of any single digit months or days and all four digits for the year. For example, for April 7, 2002 use 04   07   2002
Realize that 2003 point charts are not yet in there so you can only get points calculated for dates in 2002.
3. Be sure and select a Room Type (Studio, One Bedroom...) on the last line and be sure and select it under the correct resort. So if you've selected Wilderness Lodge Villas on the first line and want points for a studio, be sure and select Studio under --Wilderness Lodge Villas--