Wow, didn't expect to see so many posts here! Lets see... Bilou_Gateux-- I haven't messed with MUI packs or different languages of Windows. All I can say is... give it a try I would suggest using VirtualPC or VMWare to test your disc before you burn it. Let me clarify something here... The "Windows Installation Source CD" is the path to the files of the version of Windows you want to install on the target computers. The "Windows XP or Windows 2003 Server" is the path to a version of Windows (XP or 2003) that you will use to build the CD and its graphic interface (this has nothing to do with the OS that is installed, it simply makes the interface). The only combination of the two that will have problems is if you are using a Windows XP SP2 or Windows 2003 Server SP1 disc as the "Windows XP or Windows 2003 Server" with Windows PE 1.2. This causes the Disk Partitioning feature to not work because of a bug in Windows PE 1.2. I did see the Q/A about the DComLaunch Service from BartPE, but I didn't have time to get this to work in Windows PE. I do plan to fix this in the next version. As far as files that are used from the Windows PE CD; only the files under the WINPE folder are used. I did plan on doing a version that would allow you to use either WinPE or BartPE to build the disc, but again due to time limitations I didn't get to include that feature in this version. As for the drivers question; The "Drivers to Install with Windows" are driver sets (.INFs with a bunch of additional files such as .SYS, .VXD, .DLL, etc). These are the drivers you normally download from the web or get from a motherboard CD. These drivers are copied to the root of the hard drive, are are added to the unattended answer file (WINNT.SIF) so during Windows PnP hardware detection, the drivers will be automatically installed. These drivers are stored in the \AI\SOURCE\i386\$OEM$\Drivers folder on the CD. "Drivers Used During Install (Mass Storage Drivers)" are drivers (.SYS) that you normally nload by pressing F6 during a normal install of Windows. This is a driver file that allows you to access a hard drive that may be on a SATA or SCSI controller that WinPE doesn't include by default. This gives you access to the hard drive during bootup and will allow you to install files to the HDD. These drivers are added to the TXTSETUP.SIF file and are placed in \i386\SYSTEM32\DRIVERS directory on the CD. So if you need a mass storage driver, yes, I do believe you will also need the drivers for the "Drivers to Install with Windows" section. Here is what I have planned for the next version: Windows 2003 Small Banner Option Fix spelling errors Support for BartPE Ability to use the /noguiboot switch Include XCOPY for those systems that do not have it