Hi,
ignore my last post.. i was working with edit controls, of course there was nothing happens when i was putting the date manually 
I cutted the the edit controls out and only working now with the DateTimerPicker… and i fix the other problem by working with Maxdate & MinDate Properties of the DateTimePicker Class…
I have one more question, is it possible to send the values or the result of my Form/Inquiry to 2 mail accounts as text mail in groupwise ( one for the CEO and the other mail for the one who is making the Inquiry)
How can i fix that ? Hope you understand what i mean…