Wath the hell...

I opened /usr/games/ then I opened nethack and it says:

There is no default application specified to open the document "nethack".

Please reply.

EDIT:
I used finder!!!

[ October 02, 2004: Message edited by: CoolGuy ]</p>

I have the same problem. In finder I can't find the files (ha!) and the same error message comes up when I'm using terminal. Please help if possible.

Thanks.