scripts execute as user nobody

I have a problem with my PHP scripts on my web-hot, all my php scripts are running as the user nobody (group nobody). Whenever I login via ftp/telnet I am logged in as the user asduk (group asdukgrp). The problem I have is that I cannot delete my files because the permissions on the directory is set to 775. I cannot change to the user nobody my host will not allow that. If I change the permissions on the directories to 777 then I can delete the files, but have read that this is dangerous. If anyone has suggestions on how to get round this problem I'd appreciate them (or let me know if a user browsing a php site in directories with permission 777 can exploit this). I am using PHP 3.0.14 (when using PHP4.05 RC1 on a different host I don't get this problem - but need this working with PHP 3.0.14) Thanks for any help Mr. Adam ALLEN. adam@dynamicinteraction.co.uk http://www.dynamicinteraction.co.uk