I have a function F() implemented in an XLL, which depends on cell C.

Even though it calls Excel4(xlCoerce) on that cell, Excel doesn't seem to
add the cell to the dependency graph. As a result, changes to cell C don't
cause Excel to recalculate cells which call F().

Is there any way to force Excel to reevaluate the cell when C changes, which
is compatible with Excel 2000?

Thanks,
Aaron Queenan.