Cobmobox key type speed

Hi,

I am wondering if there is a way to increase the time windows will wait
to clear the key user types.

for example.

1. a combobox control in datagridview
2. a list of item (ItemA, ItemB, IetmA, IetmB, AItem, BItem, CItem)
3. user click on the combox box to gain a focus.
4. type "I", "t" , "e" --> "ItemA" will be selected/highlighted

however, i want the user be able to type "I", "e", "t" slowly, say in
a 3 second interval and it will still select the correct item without
losing the previous key stroke.


thanks lot.!!!