def OnAbout3(self, event):
           """
           Browse for file
           """
           wildcard = "Select File (*.pvt)|*.pvt"
           dialog = wx.FileDialog(None, "Choose a file",
                                  wildcard=wildcard,
                                  style=wx.OPEN)
           if dialog.ShowModal() == wx.ID_OK:
              path = dialog.GetPaths()
              #######this is where i wanted to do something like this:
              subprocess.Popen("cmd.exe")
              #I wished cmd could simply cd to the variable, path
              os.system('cd path')
              dialog.Destroy()

subprocess.Popen('cmd.exe', cwd=path)

path = 'C:\Program Files\Mozilla\'
os.system('cd "%s"' %path)