I can not access certain folders.

Hello. I am having trouble with the X Server and so I was planing to do a complete re-install, this was not the only reason for me to do it. I am using the command line at this time and I am having trouble accessing a couple of folders that I names when using KDE. One of the folders is named "old mail" , without the "'s. When I try to access that folder I get the error message of "can not find folder old". Is there a way I can access or rename this folder to copy the information located within it? Thank you in advance. James Ruhsam