hmm... patch 4.0.4t adds it to all installs. If you're on 095 and cant patch that far, here it is
www.cwo333.com/mobtypes.txt
the left column is the graphic number you can use. If you want to see all of the monster types available to you, you can cycle through all of the ones that say monster on it.
If you seem to have a few duplicate graphics or monsters are still invisible, you need to patch to see them.
Also in your login and reconnect script, you have to do
SendPacket(who, "B9801B");
to enable the graphics if you're already patched. I think this also solves the digital music question in your other post too.