Can someone help please. Seems I have finally got a vague idea of how to change status menu icons. However, when I am unable to replace the default icons.

If I use MC (Midnight Commander) I get a message cannot delete file "/usr/share/icon...." Permission denied (13)

If I use the cp command I also get message cannot create '....': Permission denied.

What am I to do?

Edit: Seems I needed to type in sudo gainroot first. Now have new status battery icons. Yaaay.