Curse you, technology. I need some halp.

My keyboard on my laptop is being a douche. Everytime I hit T, a B shows up afterward, and everytime I hit B, a T shows up afterward (sometimes before). It's like I'm hitting both keys at once, when I'm not. The same goes for Y and N, and [ and /.

That makes typing into an ordeal. Any suggestions to fix it?

Because I'm using a PS2 USB keyboard, and that's just not cutting it. At least I don't have to worry about tagging for a little while.