Well, it sounds like you're asking an Excel question (Excel has cells and
columns, Access has fields and values) in an Access forum. For that matter
it's an obsolete Access forum which Microsoft hasn't supported for three or
four years. See my .sig for more current forums. The Answers forum has a large
and active Excel forum which should be able to help you.
IF by some strange coincidence you're actually asking about an Access database
with a field named D, you can use an Update Query, but the need to prompt for
the fieldname makes it pretty complicated.
--
John W. Vinson [MVP]
Microsoft's replacements for these newsgroups: