Change size of intermediate picture ?

[SpookiePower]

I have searched for an answer but without luck, so I try here.

Is it possible to change the size of the intermediate picture ? I would like to make it bigger.

I'm using cpg1.4.22 and iGames theme.

[Hein Traag]

It's in the documentation.. http://coppermine-gallery.net/demo/cpg14x/docs/index.htm#admin_picture_thumbnail