How do I hit Scroll Lock on my keyboard in Windows? Somehow, I appear to have Scroll Lock on, which 99% of the time is irrelevant, with the 1% of the time being in Microsoft Excel.  As the keyboard on my MBP (Model 9,2) doesn't acknowledge the existence of this key (or a couple others I often want to use, e.g. Pause, Insert); how can I un-Scroll Lock my keyboard?
Use Fn + Shift + F12 to emulate Scroll Lock.

Alternatively, Windows 7's On-Screen Keyboard program (search in Start Menu, or find it under Programs, Accessories, then Ease of Access) has a ScrLk key which you can click to toggle.