Bonehead move!

[GDB-B&W-X.3.5]

During my quest to install YDL 3.0.1 on my iMac, I have managed to mess 
up my fstab file.  I was making the changes needed to allow use of my 
server drives and managed to copy the wrong fstab file the the /etc 
directory.  Now when I try to boot I get an error stating the filesystem 
cannot be found on /dev/hda13.  No kidding, that's because it's on 
/dev/hda10!  As long as I've been using Linux, I've never had a 
situation like this before.  I can input my root password and see the 
files, but am unable to copy the correct fstab file back to the location 
it needs to be because of the read-only status.  Is there a way to get 
the ability to copy the file to it's correct location?

Just a message from Doug...