Thanks, guys. I tried closing and opening the program, and joined the board to find out what I could. There's an enormous thread of "I can't get skins to work" posts. I get the impression that the people there don't believe that skins aren't working for everyone. I didn't see any posts that actually helped the people posting. It might be a problem with the program, but I don't think they're accepting that. I see nothing wrong with how I placed my files.
Anyway, I think I'm ditching this program. And for a stupid, unlikely reason: I can't press Ctrl+# for a smilie

I know, it's stupid, but much easier when typing messages as fast as possible. That and I can't tell which smilies correspond to the ones on AIM users' programs.
Besides, I liked GAIM better anyway. Simpler.
What would people suggest for a simple, bare, IRC client?