Thanks for the response, but as I said, I've already been there. It doesn't seem to be working for my 1.7.6, and V@no's profile says "Last Active: November 03, 2006" so I don't think we'll be seeing an update anytime soon. But even if I could get it working somehow, I don't want to have to select the image for all 1,000-2,000 categories in my gallery. I want it to just automatically use the first image from each category. I'm fairly certain that it's just a very small change to make that work, but I can't seem to figure it out.
*EDIT* Also, do you know if they remove inactive members from the forums? I had to re-register my account here.