The Application Data folder is hidden by default.  You should choose
Tools>Folder Options>View>check Show Hidden Files and Folders.

Tom

I have an extensive custom dictionary for technical
terms.  I want to move it to a new computer.  The path to
the custom dictionary, according to the
Tools>Options>Spelling & Grammar>Custom Dictionaries
dialogue box is C:\Documents & Settings\Owner\Application
Data\Microsoft\Proof\CUSTOM.DIC.  But when I go to the
Owner folder, there is no Application Data folder in
there. Any ideas about moving custom dictionaries to a
new computer? (To make this more interesting, I'm moving
from Word on a PC to Word on a Mac. I can manage that if
I can find the actual custom disctionary file.)

The custom.dic file is in a hidden folder (@?!! knows
why...). Go to Search - All Files and Folders - and
select "More Advanced Options", and enter custom.dic in
the query box. Look for a recently modified file (you
could even add a word to the custom dictionary before
doint this to be sure you found the right file.

Thanks for your question - it gave me the idea that I was
on the right track, and then I figured out the "hidden
files and folders" trick after using some words not in my
custom dictionary...