I have downloaded the zip from the download section and it works fine for me.
Lets assume then that it is a version problem.
You'll have to help me fix it as I don't have acess to Office 2000. FMK can take a well deserved rest for the time being. First I'll assume that the Eeight is a typo when you posted the message. You can jump to any sheet by clicking on the tabs at the bottom. See if the A7 cell is also gone nuts and if it is, see where the cell reference leads to and continue to trace the path unitl the original fault.