[balinor]

A permission is something that is set on a file...you can do that via your FTP client, or via your Host's control panel. I always find FTP to be the easiest:

Open up the site in FTP, browse to the directory where the file is...in this case, skin 1. Right click on the file...go to Permissions. Set it so that it is world writable (i.e. put a check next to each 'writable' box.). That should do it.