I found a solution. (the one suggested by INTEL doesn't worked for me nor other people. It seems that it's due to the fact that recents Intel drivers are UNSIGNED.... ). I will use my motherboard for example (ABIT IS7-G (865 PE) ), followed by a more general explaination. ------ 1) First of all, you need the drivers from manufacturer (the one that you normally use with F6 during install ). For Intel motherboard, simply follow the link from my first post, follow the instruction to create a 3 1/2 disk boot driver. 2) Copy all the drivers files in the folder $1/drivers/YOURDRIVERNAME. (in INTEL 865 case, you must copy "IaStor.cat", "IaStor.inf", "IaStor.sys" in the folder $1/drivers/iaa35/. You can omit TxtSetup.oem, but DON'T DELETE IT, you'll need some info from it later ). 3) Open the file "txtsetup.sif" (in /I386/ folder ). a) look for [sourceDisksFiles]. And add this line You must copy the DRIVERNAME.SYS, followed by "= 1,,,,,,4_,4,1,,,1,4" . ATTENTION : 1,,,,,,4_,4,1,,,1,4 is the number used for RAID (at least onboard RAID ). For other components, it's maybe something else. The easiest is to look in txtsetup.sif (under [sCSI] ) for components like the one you want to use (SCSI card, PCI card, etc.. ), then look for the name of the driver of the component (it's in front of the description ), then go back to [sourceDisksFiles] zone, and use the same number they are using.. look for [sCSI]. And add You must write : (drivername) = "description of you driver" (drivername) is the filename of all the files from your driver (WITHOUT the .sys or .inf, etc.. ) "description of your driver" is found in the txtsetup.OEM files, in the [sCSI] section of it. (txtsetup.OEM is on the driver-disk provided by your motherboard/raid adapter manufacturer ) c) look for [sCSI.Load]. And add You must write : (drivername) = DRIVERNAME.SYS,4 d) look for [HardwareIdsDatabase]. And add Don't forget the " " between (drivername). You must write : driver_ID = "(drivername)" driver_ID is supplied in your txtsetup.OEM files, under [HardwareIds.scsi.drivername] e) You can save the file, and close it. 4)Copy the file DRIVERNAME.SYS (IaStor.sys, for example ), in /I386/ dir. 5) Don't forget to add "drivers/YOURDRIVERNAME" (drivers/iaa35 , for example ), in the Winnt.sif file, in the "OemPnPDriversPath" .For example : More info in the guide http://www.MSFN.org/unattended/xp/drivers.htm Now your driver will be installed at startup automatically.