>>Jim and Vlad had excellent ideas, but there is another
>>idea to consider: If you are using VFP6 consider adding
>>Value_Assign events to the controls that have data that may
>>be changed and having them point to a Recalc method.
>>No mess, no fuss.

Well, thank you, guys. I tried Vlad's idea and it works. I saved
all suggestions from Jim, Paul and yours and I think it will help
me a lot in the future.

Thanks again, Zlatko.