What happens when you type wine in an xterm ? It should come up with a window letting you know that you didn't provide any arguments. You'll probably then need to configure the paths to your existing windows partition (if applicable) and so on. - Wine isn't an emulator, incidentally

(Sorry, bad joke).
Also, have a quick squizz at the info over at
http://www.winehq.org/site/docs/wine-user/index
Cheers,
mj