Question about eth0


Hi,

For some reason when I go into the Networking Control I see the
following:

eth0 Active
eth0-old Avtive
eth1 Avtive
eth1-old Active

I had originally backed up those files because I made changes. I
moved them later and put them in a backup directory. I cannot seem to
inavtivate the -old ones. All my networking seems to work fine. But,
why the extra items? I want to remove them.....

Is there a file I am missing that I should change??

Thanks!
.