I'm experimenting with wp1.5, trying to find my way around. One thing I know I'm going to want to do is to significantly change one of the themes, so I can design my own look. (I understand that I could choose one of the themes on http://codex.wordpress.org/Using_Themes but still I'd want to personalize.)
Anyway, I didn't want to just start making a mess of one of the provided themes: I thought I'd make a copy and demolish that first on my way up the learning curve. I went into my themes folder, made a copy of the default folder (with all its contents) and renamed it amy1. Then I uploaded the new folder into my online themes folder, figuring I'd do my dammage there.
What else do I need to do in order to have amy1 appear as an option in my /wp-admin/themes.php page?
Or, if I'm going about this all wrong, can someone direct me to where I can learn how to do this right?