danicahodge on "Twenty Ten: how to make post images appear in category view"

I am working on my first website using WordPress tools (sorry, it's not hosted yet, so I can't provide a link). I am using Twenty Ten as the site template and loving it, but am trying to tweak a couple of things. I am new to CSS and PHP.

1) I'd like to include the images that are in my posts on the category view (archive or index) for those posts. I'd still like to provide excerpts, if possible, but if not, I'd rather include the entire post.

2) I'd like to offer one of my sidebar menus as a drop-down menu, but can't find how to convert it.

Thanks for any help you can offer.

Danica