Customize Your Windows Shutdown Time

Step 1.
Right Click on your desktop and choose "New->Shortcut".

Step 2.
In the box that says "Type the location of the shortcut",
type in "shutdown -s -t 120" (with out the quotation marks)
and click next.

Note: 120 is the amount of seconds before your
computer shuts down. So, 60 secs * 2 mins = 120 secs.

Step 3.
Make up a name for the shortcut and you're done.
You can change the icon by right clicking->properities->change icon-> browse.