Hi, Tnx for all of your tips... I try to make a silent sfx archive, i have the same comment as show above : ;Le commentaire ci-dessous contient des commandes pour script SFX Path=.\%systemdrive%\WINAPPS\kav5 SavePath Silent=1 But, when i start my sfx witch a batch file : @ECHO OFF ECHO. ECHO Decompression de Kaspersky Antivirus Personal 5.0 ECHO Veuillez patienter... START /wait "%systemdrive%\WINAPPS\kav5\kav5.exe" Kav5.exe is my sfx archive My problem is here. When the batch start, immediatly a second batch windows appears with the prompt like this: Microsoft Windows XP [version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\WINAPPS> The same problem appears even if i try the dos sfx module. Somebody will able to help me ? How is possible to successful my silent sfx with a batch file ? Tnx for your awnsers (As you see, i'm french, and my english is not really perfect lol , tnx for your patience to read me)