Sorry Left out about the Deleting all file excpet part.
You need to create 1 file
[Filesnottodelete.sto]
treeinfo.exe
xcacls.exe
deltree.exe
Filesnottodelete.sto
IDSuite
(also put in the name you called the script.kix file or else it will be deleted after it runs)

Just put in the list the files in the c:\Program Files\Diskchange\ Folder you don't want to delete.