When you group a number of textboxes is it possible to apply a "change" event which will recalculate all text boxes whenever a single textbox within the group is changed.

Put all you text boxes in the same container (like a frame) and
put this code in the myText_Change even. This loops through all the text boxes in the same container

dim obj as control
for each obj in me.control
if typeof obj is TextBox then
if obj <> myText then
if obj.parent = myText.parent then
'' do whatever with obj

But be careful that this introduces a reintrance!
Another way to deal with this problem is to create an array of text boxes (much easier)

Marco

cheers Marco will have a go