copy file permissions?

[Anon]

I'm trying to copy an image from the tmp directory on my server to a directory called pics but I keep getting an "unable to create pics/filename.gif - Permission denied message. I need to know how to set the file permissions to accomplish this. I set the file permissions to 0777 and 0700 and 0766 and none of this permission settings solve the problem. My host won't allow me change directory permissions. Is that why I can't copy to another directory?

[Anon]

Correction, those are file permissions I set
for the php file. I think I know how to set the permissions for the directory and file through the php chmod function.