[Nagiosplug-help] Check all disks?

[Tong Young]

Is there a way to check the drive space of all drives on a windows
computer?  I've looked at many plugins but they all require you to
specify a drive letter.  I have quite a lot of computers and would
rather not have to figure out which ones have D: drive or E: drive and
which ones don't... I would just like to say check for any drives over
80% full.. 

Thank you.