Check out PortMon from SysInternals. While not a perl answer, it can do remote queries of machines.

Dig a bit on their site. They have all kinds of interesting little bits of information about Win32 systems ...

UPDATE: should one choose to write a module for this, a reference is Printing and Print Spooler Functions from http://msdn.microsoft.com.

UPDATE: I think I found the Win32::OLE lib and properies for this ... check out oleprn 1.0 Type Library in your Win32::OLE::Browser, asphelp and PrtSum.

HTH
--
idnopheq
Apply yourself to new problems without preparation, develop confidence in your ability to to meet situations as they arrise.

~ Shunryu Suzuki