Also, can you add a function to menu's of XPOI and ParkMe for us to manually close the windows?
With "windows", you mean the transparent windows ? If yes, it's already there.
For example, if you open the CTRL+F9 Wikipedia menu, a further press of CTRL+F9 wil close it. Same for CTRL+F10 for the web browser (this will work only if the focus is still on the FSX windows, otherwise, if you move the focuse to the web browser, the standard ALT+F4 will close it), and for CTRL+F12 YouControl, pressing the hotkey with the meny window open, will close it.