Steven,
Set the ComboBox to DropdownList.
If you are using a version before VFP7 you have save/increase the _dblclick value in the GotFocus(), restore it in the LostFocus(). This will better allow incremental typing to find the value.
In VFP7 just set the _INCSEEK value if it's too low to allow mulitple keystrokes during incremental seeks.
>I have a combo box that I populate a grid with when a value is clicked. I anticipate that the user will sometimes want to key the value in instaed of scrolling down the list to make a choice. What is the best way to handle both conditions?