Thanks for trying to solve my problem I changed the following parameters I then tried again and... Still unsucessful But I noticed that - before slipstreaming wmp11, txtsetup.sif is OEM (ms dos txt) coded - after the process, txtsetup.sif is ANSI (windows txt) coded. I don't really know if my problem is due to this fact but I know that I must choose the right format when I create my setup files (winnt.sif, runonceex command lines...). Otherwise "french" characters (é,è,à,ç,...) may not appear correctly !