[snakes1100]

PHP Max Post Size ? MB <-- Set this 1mb bigger than max upload size

PHP Maximum Upload Size ? MB <-- How big of a file is the max you want uploaded, adjust it to what you want to be the max size of a file you want uploaded to your site, if you want to allow a file thats 500mb, then set it to 500mb, if you want no files uploaded larger than 16mb, then set it to 16mb, etc...

PHP Memory Limit MB <-- For a small forum 32mb should suffice, if you get any errors stating that you have reached your max memory limit, then raise it to 64mb , etc...

Restart httpd after you have changed the php settings, so they take effect.