Here are the bits and pieces. You'll have to glue them together yourself.
To sort articles by the date they're published, use the parameter "sort_by,array(published,false())" to sort articles from new to old, and "sort_by,array(published,true())" to sort from old to new (in a fetch function).
To show a maximum of five articles, use the parameter "limit, 5".
Getting a Google toolbar should not be a problem as this is included in the default node/view.tpl, so just copy that one and add the parameters above.
