text editing

How do i edit the stuff it says in multyplayer like "..... was melted by ......'s Plasma Rifle."

I assume you mean in ZDoom? I think normal Doom doesn't have death messages.

Anyway, you need a .bex file and use [STRINGS]

This page should help you out:

http://zdoom.notgod.com/reference/dehacked.html#obits

EDIT: fp

A few strings have been added since the manual was written. This thread may help:

http://notgod.com/phorum/read.php?f=12&i=7747&t=7742