What is it?

spoolss.exe is the microsoft windows printer spool subsytsem application.

What does it do?

lotsa printing stuff. Not much else... A printer spool is an organised buffer space to hold documents in a specific order ready to print, as the printer becomes available the spool sends a particular document or print job to the printer.

More info:

[url=http://www.microsoft.com/windowsserver2003/technologies/fileandprint/print/default.mspx]microsoft.com[/url]