File permissions?

[Jim Byrnes]

I've been using Ubuntu for about two weeks now and am starting to get 
used to it.  However, coming from an OS/2\Windows world file permissions 
seem to be giving me some grief.

Maybe if someone could tell me how to do a couple of specific tasks it 
would become clearer to me.  I have Jedit loaded on all three of my 
OS's. I have modified some mode files on the other OS's I would like to 
use on Ubuntu.  I copied them to a shared folder on Ubuntu but I can't 
copy them to /usr/share/jedit/modes which is where Jedit will look for them.

In that same vein, if I wanted to edit one of those files with Jedit how 
could I get Jedit to open it for editing?

Thanks,  Jim