ImageGif newbie question

I am trying to write a gif image to a file...when I use ImageGif, I am able to view the newly generated file just fine...but when I try this: $filegif = fopen("images/myfile.gif", "w"); ImageGif($im, "images/myfile.gif"); fclose($filegif); I get a permission denied message...to give some background, the myfile.gif does not exist, so the "w" should create it, so I have read. The question I have is, since this is a permissions issue, do I have to change the permissions on the images directory, in order to write to it? I don't want to have to give write permissions to the world, and since this is server side, I didn't think I had to...anyone have a clue about this? Thanks in Advance, Jessica