I've spotted an Explaination about txtsetup.sif in the "http://gosh.msfnhosting.com/txtsetup.htm" and like it more than unattended setup (winnt.sif) so modify it. i've added some fonts with their Registration Entries in an inf file, some extra cpl files and some exe file with Registration Entries to add them to the runonce i think thats all for more info this is error part of setup log: The signature for Windows XP Professional Setup is invalid. The error code is 800b0100. No signature was present in the subject. *** Fatal Error: Setup failed to install the product catalogs. This is a fatal error. The setup log files should contain more information. 09/24/2004 18:06:44.503,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, The signature for Windows XP Professional Setup is invalid. The error code is 800b0100. No signature was present in the subject. 09/24/2004 18:06:44.503,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,,Error 09/24/2004 18:06:44.503,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,,: 09/24/2004 18:06:44.503,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, The signature for Windows XP Professional Setup is invalid. The error code is 800b0100. No signature was present in the subject. 09/24/2004 18:06:44.503,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, *** 09/24/2004 18:06:44.653,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, Setup failed to install the product catalogs. This is a fatal error. The setup log files should contain more information. 09/24/2004 18:06:44.653,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,,Fatal Error 09/24/2004 18:06:44.653,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,,: 09/24/2004 18:06:44.653,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, Setup failed to install the product catalogs. This is a fatal error. The setup log files should contain more information. 09/24/2004 18:06:44.653,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,, *** 09/24/2004 18:07:54.123,d:\xpsprtm\base\ntsetup\syssetup\log.c,133,,GUI mode Setup has ended because of a fatal error. *****