The site you want to copy is one of the styles included with Atahualpa in the styles folder. I just imported it and looked at the code for the items you mentioned and here it is. You may have to tweak some of the settings for your situation.
HTML Code:
div.searchbox {
position: absolute;
top: 130px;
right: 25px;
}
div.searchbox input.text {
border: none;
padding: 2px 15px 2px 3px;
background: #fff url('<?php bloginfo('template_directory'); ?>/images/search2.gif') no-repeat right center;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
height: 15px;
bolder: solid 1px #e7e7e7;
font-size: 11px;
}
a.posts-icon {
position: absolute;
top: 163px;
right: 140px;
font-weight: normal;
color: #fff;
font-size: 11px;
}
a.comments-icon {
position: absolute;
top: 163px;
right: 30px;
font-weight: normal;
color: #fff;
font-size: 11px;
}