Picture upload size

Last Run Details:

Gallery version = 2.2.5 core 1.2.0.7
PHP version = 5.1.6 apache2handler
Webserver = Apache/2.2.3 (CentOS)
Database = mysqli 5.0.45, lock.system=flock
Toolkits = ArchiveUpload, Exif, Ffmpeg, NetPBM, ImageMagick
Acceleration = none, none
Operating system = Linux molson.dingo-den.com 2.6.18-8.el5 #1 SMP Thu Mar 15 19:46:53 EDT 2007 x86_64
Default theme = matrix
gettext = enabled
Locale = en_US
Browser = Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)
Rows in GalleryAccessMap table = 11
Rows in GalleryAccessSubscriberMap table = 280
Rows in GalleryUser table = 2
Rows in GalleryItem table = 280
Rows in GalleryAlbumItem table = 7
Rows in GalleryCacheMap table = 0

I would like to know how to increase the size limit for files to be uploaded to the gallery. It is currently set to 2 mb but it says that the admin can change this.

Thanks