413 Request Entity Too Large - File Upload Issue

I am trying to upload 30MB file on my server and its not working. 1. When I upload 30MB file, the page loads "**Page Not Found**" 2. When I upload a 3MB file, I receive "**413 Request Entity Too Large**" with nginx/0.6.32 I am trying to find nginx so I can increase "**client_max_body_size**" but I am unable to find nginx installed on my server. I even tried running: vi /etc/nginx/nginx.conf or vi /usr/local/nginx/conf/nginx.conf to check if the config file exists, but I couldnt find it on my server. Is there anyway to resolve this issue? Or do I have to installed nginx on my server. EDIT: I have made all necessary changes in my php.ini files, post_max_size 128M upload_max_filesize 100M memory_limit 256M Thanks, Raju