I think you can find everything you need in this topic: http://www.terra-arcanum.com/phpBB/viewtopic.php?t=10635 It's really just six or seven rows down.
I noticed your location is France. If this is true, You have a different version of the "Vormantown" module. The module can be found under "C:\Sierra\Arcanum\modules". The difference between the French (and German) "Vormantown" module is the language barrier. But the good news is Sierra released the English version and is aviable for download. English Version of Vermontown - ftp://ftp.sierra.com/pub/sierra/arcanum ... antown.zip PS It is possible for a french or german player to play with someone that is playing the english version. But you would have to download the Vermontown DAT file from that host during his/her game play. I've been there and done that and it takes hours. I put the complaint into sierra which they released of the english version of vermontown.