You're probably not going to have privileges above read, for anything outside of /home/yourname. If you need to move a file/folder someplace else, you'll need to use sudo. Ex:
sudo mv /home/chris/Desktop/myfolder /opt/lampp/htdocs
Or if you're still having problems, and really need it moved, use su, I'm assuming you have root access. Ex:
password for su:
Then you'll have access to anything, and everything. So once you move your folder, be sure to switch back to your normal permissions! To do so, just type exit, and hit enter.