One of those "I can't believe it's not there" features Windows lacks is the option to scroll an application window which isn't currently active. I can see it being somewhat confusing for less adept users, but many of us find the extra mouse click required to bring focus and enable scrolling to be a tiny, annoying speedbump.

Fortunately, WizMouse bolts on that functionality for free. Download the app from Antibody Software, and you'll be able to scroll background windows (including those opened with Administrator permissions). As a bonus, you can also use WizMouse to brute force scroll wheel support into applications which don't offer it.

You can also optionally focus the window you scroll -- which I like much better than the click first, scroll later scenario.