Perhaps Debra Dalgleish's site can get you going.
http://www.contextures.on.ca/xlDataVal02.html
Gord Dibben MS Excel MVP
On Mon, 16 Nov 2009 13:07:52 -0800 (PST), Doug Howell
<(E-Mail Removed)> wrote:
>In Excel 2007 I have a sheet "sheet1" which has a part number in a
>cell. (A5)
>I want cell (D5) to have a data validation drop down menu which is
>populated from "sheet2".
>
>Sheet2 data looks something like this:
>
>Column A Column B
>partnumber1 tradename1
>partnumber1 tradename2
>partnumber2 tradename3
>partnumber3 tradename4
>
>The drop down in (D5) sheet1 should only contain tradenames which have
>partnumber matching (A5) sheet1.
>
>
>Ideas?
>Can I use SQL syntax in the data validation lookup?