is there any way that i could have all my other worksheets import defined
name ranges from a source worksheet? and having them update every time i open
them or change the ranges in the source?

i made a data workbook for computing our production costs, and then, made
different workbooks for different parts.... all those part workbooks will
have to get their data from the source workbook, which already has defined
name ranges.... my problem now is, that whenever i change the cell ranges on
the defined names in the source workbook, the defined names from all the part
workbooks still use the old ranges... all my computations are then wrong or
erred.

is there any way i could possibly make this work? I'm trying to avoid making
all the part cost computations into different worksheets in the data workbook
because we have almost around 500 parts, and that would be too much for me to
search for thru all the worksheets. at least having each part in different
workbooks could give me, or the user, a clearer view of everything....

I've been on this project for months... any help would be greatly
appreciated. i'm starting to get tired and frustrated.... thanks.