Essentially, to enable large uploads (>5M) you need to change two things. I have Gentoo Linux running so I will
detail how to do it with Gentoo, but the config files should exist (albeit in different places on different systems)

1.Change the LimitRequestBody in php.conf (not php.ini)

php.conf is the config file to mod_php. On my Gentoo installation,
this resides in /etc/apache2/conf/modules.d/70_mod_php.conf
If you are having trouble finding this file use:

Change the line:

to:

or whatever limit you want.

2.Change upload_max_filesize in php.ini

Find your php.ini. Mine was in /etc/php4/php.ini.
Make sure file uploads are enabled and ensure that you change.

Change:

to:

3. Ensure files are uploaded to a DIRECTORY rather than the Database

In Admin->File Gallery ensure that you upload files to a directory. Big Files in the DB is not a good idea
in my opinion unless you want to mysqldump's frequently of the content. Let us know how it goes .

4. Restart Apache and hope it all works

• http://us4.php.net/features.file-upload