Repair my php

Hi, I have a part in my website admin where i manually add client`s pic. I simply select client`s name, select pic and upload the already sized picture data. A week ago, my host server crashed which affected my site. It is now back but i cant upload pictures anymore, this is the error i get when i try: --------- Warning: copy(images/users/[login to view URL]) [[login to view URL]]: failed to open stream: Permission denied in /home/barworld/public_html/site/[login to view URL] on line 70 Warning: unlink(images/users/[login to view URL]) [[login to view URL]]: No such file or directory in /home/barworld/public_html/site/[login to view URL] on line 93 -------- Someone told me that i have to write a permission777 but i need someone to assist me or tell me in a layman`s language how to do this. Attached here is the file [login to view URL]