Doom question

[John Aldrich]

Anyone have any ideas why I can't get Linux Doom to run on
my system? I've got a K6-2 333 with 32mb ram running
RedHat 6.0 upgraded to KDE 1.1.1. Whenever I try to execute
the "rundoom" script, it comes back with "./rundoom:
/usr/X11R6/bin/xdoom: cannot execute binary file " (exact
quote.)
Anyone have any suggestions? Thanks...
        John