Formatting the display of search results

Hi everyone,

this is a two-in-one question. I use tag cloud on my side bar, and clicking on one of the tags brings up a list of related content using the archive page/template(?). I’d like to show the different entries as excerpts rather than full length. And I’d like to show the name of the tag at the top of the list, instead of ‘archive’

The other question – when I use the search box, it shows a list of excerpts, but without the thumbnails

Is there a way to fix this?

Thanks so much for your help!!

The page I need help with: [log in to see the link]