Hi. I am running a Pix 515 running version 6.3(1). I have a problem with some lines in my config that cannot be removed. It is really strange but no matter how I try to get rid of them they stay. I have tried prefixing the line with no and that doesn't work. It was suggested to me to erase the configuration, edit the configuration in a text editor and reload it. Do I need to erase the running config or the flash config or both? How do I do this and load the modified configuration back up.