>HI
>
>I have a combo on an asp web page that allows multi selectino. The combo is populated from a sql TABEL
>
>I want a second combo that can have different content depending on the first. Where is the best place to put the code that populates the second combo.
>
>Also changing the second combo may have to affect the contents of the first (if that makes sense)
>
>Thanks

Make a google search for AJAX dropdown.

Relatively recent discussion thread on this topic

http://social.msdn.microsoft.com/Forums/en-US/transactsql/thread/df468105-508c-4428-a4ee-92274eccc09c