mojoPortal already has an RSS Agregator feature. Put it on the home page and add the feed url for your blog to it. You can configure various things about the way the RSS Aggregator displays, including how many items to show.
If I wanted to add a little icon next to the title I would look at the rendered markup and figure out how to contruct a css selector for the titles in the rss feed and then use a background image with positioning. For an example see the tachmania skin as it puts an image into module titles using this technique.
My guess after looking at the markup myself is syntax something like this would work:
div.rsstitle h2 {background: url(square_arrow.gif) no-repeat 0% .7em;}
div.rsstitle h2 {background: url(square_arrow.gif) no-repeat ;
background-position:left; }
where square_arrow.gif can be any image, the path is relative to the css file so easiest if its in the same folder.
Hope it helps,
Joe