My guess is that he already has that version. The disks that are requested on that page are original disk images or the original disks themselves so that they can be installed by owners of the original package.
The objective is to create installers for original copies that are not hard drive installable already. Why would someone want to make a hard drive installer for an already hard drive version?
I can't even remember what Spookyz installs are, but if memory serves me correctly, they were installs from cracked versions. Cracked copies are easily found, so I can't even imagine taking an already hard drive installed copy from a crack and making another hard drive install from it.
I don't believe you thought this one through very well, dude...