Do you have MS Excel 97 or higher? If so you can use my spreadsheet. It has all the 2002 charts in it. Click Here to get to the original post. From there you can click to the download site.
Click Here to see a screenshot. The example shows an OKW 1-B/R unit selected for a 6-day (Sun thru Fri (Sat checkout)) mid March 2002 stay and will cost 22 points / weekday, 54 points / weekend for 164 points total.
The second screenshot (Click Here ) shows the report that would be generated for that same vacation.