Lars-Erik Østerud said:
Subject says it all, what is this stuff. Is it in use, or leftover
from something I once had installed (files not used for a while)?
These are the files used for Windows Management Instrumentation, or WMI,
which is Microsoft's implementation of Web-based Enterprise Management
(WBEM). Those files are part of Windows and are used to query the state of
the machine and other information. You should leave them where they are so
that any program you have that uses WMI to query for information will
continue to work properly.