Code:
NTFSPerms("ADD:CHANGE","C:\Program Files\Old Bike Soft","Gezondheidshuis\Alle Gebruikers")

Yeah that'll work.

 Code:
NTFSPerms("ADD:CHANGE","HKEY_LOCAL_MACHINE\Software\Old Bike Soft","Gezondheidshuis\Alle Gebruikers")

That won't work, NTFSPerms unfortunately won't work with Registry.