Calendar:
find this lines
#wp-calendar{text-align:center;margin:0;width:95%;}
#wp-calendar td{line-height:10px;font-size:10px;color:#fff;}
#wp-calendar td a{display:block;color:#fff;text-decoration:none;line-height:10px;border:1px solid #fff;}
#wp-calendar #prev a{width:30px;}
#wp-calendar #next a{width:30px;margin:0 0 0 30px;}
#wp-calendar #today{background:transparent;color:#999;}
#wp-calendar #today a{color:#fff;font-weight:700;border:1px solid #ccc;}
#wp-calendar caption{text-align:center;width:100%;margin:0 0 5px 0;text-transform:lowercase;}
and change to this
#wp-calendar{text-align:center;margin:0;width:95%;}
#wp-calendar td{line-height:10px;font-size:10px;color:#333;}
#wp-calendar td a{display:block;color:#000;text-decoration:none;line-height:10px;border:1px solid #ccc;}
#wp-calendar #prev a{width:30px;}
#wp-calendar #next a{width:30px;margin:0 0 0 30px;}
#wp-calendar #today{background:transparent;color:#999;}
#wp-calendar #today a{color:#000;font-weight:700;border:1px solid #ccc;}
#wp-calendar caption{text-align:center;width:100%;margin:0 0 5px 0;text-transform:lowercase;}
Flickr:
open /inc/feature.php and find this line:
<div class="ff">
<h2>flick<span>r</span></h2>
<div class="fff">
<?php get_flickrRSS(6); ?>
</div></div>
either delete it or replace
<?php get_flickrRSS(6); ?>
with the nextgen php code.
Widgets:
Open functions file, search this lines:
register_sidebars(7, array(
replace with this
register_sidebars(2, array(
and this
'before_title' => '<h3>',
'after_title' => '</h3>
and replace with this:
with this
'before_title' => '<h2>',
'after_title' => '</h2>
Widget should work properly then, as all sidebars have its own parameter.