Place both CDIMAGE.exe and xpboot.img in the root of the C:\ drive, this command also assumes you have a folder called C:\XPCD\ containing your CD files. C:\CDIMAGE.EXE -lWXPFPP_EN -bC:\xpboot.img -t08/26/2001,02:56:00 -d -h -n -m -o C:\XPCD C:\WXPFPP_EN.ISO WXPFPP_EN.ISO will be created in the root of the C:\ Drive -l = specifies a volume name, WXPFPP_EN is Windows XP Professional -b = specify location of boot file -t = set a time stamp on all files -d = don't force lowercase filenames to uppercase -h = include hidden files and directories -n = allow long filenames (longer than DOS 8.3 names) -m = ignore maximum image size of 681,984,000 bytes -o = optimize storage by encoding duplicate files only once Since Command prompt doesn't allow you to paste the command in, (its a hassle typing all that out) simply put it into a CreateISO.cmd batch and execute!