To create a Quick Restart icon on your desktop:
Right-click on an empty spot on your desktop
Choose New | Shortcut
Where the Wizard says "Type the location of the item" type
shutdown -r -t 0
(that's a zero on the end, and there are spaces between all the entries)
Choose Next
In the box that says "Type a name for this shortcut" give it a name that you like. Personally, I call it "Quick Restart". Choose Finish.
Right-click on the new shortcut and choose Properties. Click the Change Icon button and change the icon to something that'll be hard to miss. You don't want to accidentally click this icon.
To test the icon, make sure no programs are running, then double-click on it.
To make a Quick Shut Down icon, follow the same instructions, but the shortcut command should read:
shutdown -s -t 0