Programmatically shutting down a running program

Phil,
I appreciate your fast response. Unfortunately, when attempting to close the application in this manner, the application responds with a "Are You Sure" modal dialog that has a "Yes" and a "No" button. If I use the same methodology to close this dialog box, the application is unaffected, and keeps running. In order to shutdown the application cleanly, I need to be able to respond with a "Yes" message to this dialog. I cannot locate any documented constants to do this using the postmessage API of user32. Can this be done? The only way that the shutdown works is by using the constant "WM_QUIT" instead of "WM_CLOSE" in the postmessage function, but the application does not shutdown cleanly -- it appears to be ripped out of memory. Since this application is linked to a database, I need the shutdown to be clean. Any other suggestions? All are welcome and appreciated!

Haven't looked at Phil's links, but here is a suggestion ...

Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long

Public Declare Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long

glHandle = FindWindowEx(0, 0, vbNullString, "Whatever is the 'Caption' of the window you wish to close")

ShowWindow glHandle, SW_SHOWMAXIMIZED
SendKeys "%{F4}{Enter}", True 'Close Application