Deleting files?

Hey guys. Any insight into this problem im experiencing would be much appriciated... I installed some software on my web space a while back, I ran a script and it extracted some files from a tar ball I had uploaded. This was all designed to make the package easy to install and set up. The idea being you just uploaded the tarball and a script to set it all up. The web server does the rest. Well now I have a problem that I am trying to delete them. I cant delete them using my FTP access to my web space, because I dont have the right permissions. I wrote a script to tell me information about these files, it reports back that the owner is "apache" and the group is "apache". I wrote a simple script something like this: <?php @unlink($HTTP_GET_VARS[file]); ?> This doesnt work on files that I own, let alone files that the web server owns in my user space. What am I doing wrong? Thanks in advanced. Matt