When I am in a game and just tap the Windows key, it minimizes my game, then switches to the desktop. That annoys the hell out of me. I do not want to disable ALL Windows key combos, I use them a lot, ...

Alt-Tab is a built-in OS function and hence, you cannot disable it per se, unless you modify the registry. But, as an easier alternative, you can remap/rebind the key while in the game. In this post, ...