[farshizzo]

This is not possible in the current version of Vizard. Here is some sample code showing how to use the Windows MessageBox function to customize the title:

import viz
viz.go()

import win32gui
import win32con

# Equivalent to viz.message
win32gui.MessageBox(viz.window.getHandle(),'My Message','My Title',win32con.MB_OK)

# Equivalent to viz.ask
print win32gui.MessageBox(viz.window.getHandle(),'My Question','My Title',win32con.MB_YESNO) == win32con.IDYES