How show content of "Users" category on the start page? (cat 1)
There's a mod that will accomplish what you're looking for: http://forum.coppermine-gallery.net/index.php?topic=5900.0
Please note that the mod has originally been written for cpg1.2.x, so you might have to apply some changes to it.
In the future please search before posting, this has been asked before...
Joachim