There is a book on Windows System Administration with Perl. It goes over a number of modules that can be used. I don't know how much of that is applicable to Win9x, though

What you're talking about is the Performance Monitor information. That is read using a registry key, and is different from Win9x and NT/2k/XP. You should be able to do the perfdata queries directly using the Windows Registry features easily available in Perl, or look for a module that reads "performance data".

—John