Default sorting of gallery?

I'm looking for an option for default ordering of images to be in descending order. For example, when I add a new gallery, I want it to be on page one, not all the way in the back. I have yet to find that option on the admin settings. I'm sure this is a simple question and what not, sorry.
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The following information is required to get an answer:
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful): http://www.robarts.net
Gallery version: v1.5-RC3
Apache version: 1.3.31
PHP version (don't just say PHP 4, please): 4.3.10
Graphics Toolkit:
Operating system: Linux server