Hi
I currently see the font set for the main menu as calibri. If you wanted to try changing it in the theme css file, its in minimal-skin.css on line 96.
Getting the border is a bit tricky, but you can do it with a bit of css manipulation.
Try adding the following CSS to your Quick CSS (located under the Styling Tab in the theme options) or the custom.css file in the css folder of your theme files:
#top.home .first {
margin-left: 0;
clear: left;
padding-left: 0;
border: none;
margin-right: 2%;
}
#top.home .one_half {
overflow: hidden;
margin-left: 0%;
width: 47%;
float: left;
position: relative;
display: inline;
border-left: 1px black solid;
padding-left: 4%;
}
Regards,
Devin