Hi, I'm using this ISO to do clean installs. I haven't got $oem$ folder, addons ou silent installers folders. My ISO is just a installation CD XP POST SP3. (I have just winnt.sif + winnt32.sif) Folders "cmpnents", "DOCS", "DOTNETFX", "SUPPORT" and "VALUEADD" take 79.1 Mo. My "MUAuth.cab" : 21-05-2009 My "MUWEB_SITE.CAB" : 16-10-2008 (Your :06-08-2009) => This is the problem ? WGA_Validation_AddOn_1.9.40.0-2_-_redxii : how can use it ? Thanks !