MS use an app. called cdimage.exe.
In the tutorial , you are using oscdimg.exe - in terms of what you are doing here, it does the same job. oscdimg.zip
It is probably easiest to put oscdimg in system 32 - so when you open a cmd prompt, you are right there.
oscdimg.exe -u2 -m -b[path to bootable image file] -h[path to windows files] [path and filename to create]
-u2 Creates UDF file system 1.02
-m Allows creation of image file larger than 700mb CD limit
-b Indicates the location of the boot image
-h Includes hidden files
-l Sets volume label of DVD, if you like. -l[Disc name or label]
-t Sets the date and time , if you like. -t[MM/DD/YYYY:HH:MM]
Note: Space before each command switch. No space between switch and path. Do not include the brackets in the path. If the path includes spaces, enclose it in "".