All I seem to do thse days is write hacks <g>. This problem actually applies to several forms that I'm redesigning and adding fields. In one case, I have around 100 checkboxes being added to two forms, so I have a hack that copies those from one form to the other, and hacks them into the "new page tab" in the other form. It's clever enough to know if the field is already there, in which case it updates it's page location, so that the two forms are kept in sync.
It also hacks the name of some labels based on the caption, that saves me manually having to change the label name to somethign meaningfull.

However, I'm not sure how field order is determined on a tab, is it just the physical order of the fields in the .FRX ?