D:\Hosting\8085822\html\forum\Uploads\22483.61533908.jpg.yafupload' is denied.

I googled it and found one person said to give the Uploads folder Write permissions. I use Godaddy and the Jave FTP client they have does not even come up. I tired updating Java, but that didn't help. I use filezilla anyway. Tried to change the folder permissions with filezilla and get the following error:

500 'SITE CHMOD 666 uploads': command not understood

Any suggestions?