the method by sriks creates a modal dialog box. well if thats ur need, you need not read further ;-)
in case you have to create a modeless dialog, you can use the create function, supplying the DialogID as a parameter... additionally you may have to set the focus to the child dialog (others: is this really necessary??)
and remember, in both cases, you have to include the header file of your Dialog class ( say MyDialog.h ) appropriately...
Thanks,
sgopinath