Make sure you have the properties:

ColumnCount = 2
RowSourceType = 6-Fields

-Irv.

>Dear Andrew,
>
>Thanks for your suggestion.
>
>But what you have suggested I have already tried out in a same way . I am using a combo Class of country and everything is same as you suggested.
>
>I think some other setting are has to be changed to get the result.
>Please help.
>
>Rahul