i had enabled kiosk mode for non-admin accounts, and the problem is that when i open up Guest Account, i dont know how to close the window as there isn't any 'close' buttons... all i have to do is just press Ctrl+Alt+Del buttons to close the window.. is there any better way??

When developing a solution that will run in kiosk mode you have to think very carefully about navigation around the solution.

You will either have to provide a set of close option buttons on every layout that the user might want to close from or better still control the users navigation in such a way that they must come back to the main menu where they will find the 'close' button.

This second method means that you can 'tidy up' after the user as they make their way back so that the solution is left in a clean condition for when they next open it.

Either of these methods can be implemented by opening the solution with a full admin account.

HTH

Phil