Alright, I just bought Half-life, Blue shift, Opposing Forces, and the Sands of Time trilogy over Steam (I love holiday sales). However, once I fired them up, I realized that my wireless keyboard is incredibly unresponsive. By that I mean that, at times, I'll run in a different, or sometimes opposite, direction from what I say (i.e, I'll hit W and it'll act as if I hit S and A). At other times, I'll be holding down W, and it'll act as if I'd been pressing it multiple times (as in, I'll move forward, stop, move forward, etc). Do you have any ideas what my problem might be or how to fix it?