Hello,
Yes, but you should have some skills in working with HTML.
These links might be helpful to you, as you might want to learn how to have copies of skin files protected against modification on directadmin updates.
http://www.directadmin.com/features.php?id=404
http://www.directadmin.com/features.php?id=1141
See /usr/local/directadmin/data/skins/<SKIN_NAME>/
And look at header.html in the directory.