I'm using a view block as a panel page on my front page, and the view is a list of blog posts displaying the title, date/time posted, and who posted it. I need to do two things:

1) Add divs around the block so I can add my rounded corner graphics
2) Add some text in front of the name of the poster

What override function do I use to modify the markup for this block?  Would it be theme_block()?  Or another one?

Thanks.

Steve