Collapsing Groups while the cells are protected

I want to expand or collapse the groups while some of the cells are protected.

It is better to look from the file I have attached. I want yellow cells to be entered by the user and the formulas will calculate the white cells. Since I do not want the user to change the cells; I protected white cells. However once protected the shet, expand collapse function does not work anymore. I overcame this problem in office 2007 but since I am using excel 2000 i would appreciate someone would tell me how to do it in 2000 too.

The password for the file is 1234 btw.