[newbie] Binary Applications

[Charles Sharp]

I've been having trouble getting some applications to run on my machine.

I downloaded some apps in compiled binary form already and everytime I
go to run them it says "cannot execute binary program".  How can I make
it so these applications will run?  One of them was a mud client,
another was the game Doom that I downloaded from www.download.com.  I'm
running Mandrake 7.0.2 (AIR).  Thanks in advance.