>I have a textbox and a ListBox, populated with a table of Last Names. Is there a way
>to make it so that as I type a last name into the TextBox, the search takes place.
>Steve

If you have a table with lastname as a key:

USE NAMES in 0 order lastname && UPPER(lastname)
Procedure MyText.InteractiveChange
lcSearchKey=upper(alltrim(this.value))
set exact off
if seek(lcSearchKey,"NAMES","lastname")
   MyForm.MyListBox.Value=names.lastname
else
   MyForm.MyListBox.Value=" "
endif
set exact on
endproc

Or, you could do it in the listbox using IncrementalSearch feature!