Also, KeyTweak will allow you to remap your Windows keyboard, useful for reassigning modifiers like Control-C to the Mac's Command-C, etc.
[robg adds: Don't worry, we're not turning into Win XP Hints, despite old April 1st announcements to that effect. But if there are general tips that will help Mac users make their time in Windows more productive, such as this pointer to a couple of very useful apps, we'll run them. What we won't do, however, are run hints regarding using Windows XP itself ("How to configure a wireless connection in XP"). There are lots of places for such help, but we'll continue to focus on hints regarding OS X!]

