|Hi catfun, hello everyone,|
Spool.exe is not a Windows file.
What error message are you receiving about spool.exe missing?
When are you receiving the error message?
Spool.exe is related to RapidBlaster spyware and/or the Sober.I worm.
Use RapidBlasterKiller to remove it.
I also suggest you run an online virus scan from here.
Download, update and run Spybot