Have a look at the small 16Kb file from
http://www.maddes.net/temp/) it contains an easy to use config file, which also explains how you get dismemberment with ease and why it has to be this way.
It doesn't modify any original game data, so you still have to press a key after each game start or load.
Just make sure you read the text file and config files.
Maddes
P.S.:
The patch is meant for the european version (english, francais, deutsch).
I don't know if the u.s. version also resets g_dismemberment back to 0 when a game is started or loaded.