That's the dodgiest, most long-winded way I have ever seen to install a service, why not just use Windows' built-in service control manager?
code:
sc create "Xlink Engine" binPath= "C:\Program Files\XLink Kai Evolution VII\kaiLaunch.exe" start= auto
This will create the service and make it automatically start when you logon.
code:
sc start "Xlink Engine"
This will make it start immediately instead of you having to restart to make it auto-start.
This will work on every NT-based version of Windows afaik.