Here it is!  
Beavis and Butthead doom patch!

To run this pkunzip bnbdoom.zip in your doom directory.  You'll need about 
1.0 megabytes to install the patch.  You can delete about 500K (zip file)
after the patch is installed.  This is pkzip'ed with pkzip 2.04G.  When 
installing you'll need to look at the "readme.1st" file and then install the
patch using 'runme.bat'.