Could these files be obsolete?

I am running Windows 2000 v5.0 SP4.

In Windows Explorer I selected folder %system%/system32/drivers, and sorted on file Type. The folder contained a subfolder called etc. The etc folder contained four files: services, quotes, lmhosts.sam and hosts.bak. None of these files appeared in the Software Environment for Drivers within System Information. Could these be obsolete files?