oh..and last but not least, this adds some 'progressive enhancement' to 
the sidebars (as in: looks fancier in new browser, but wont break old 
browsers)


style.css
=========
 td.sidebar p.classblock {
+  padding: 15px 5px 5px 15px;
   margin: 4px 0px 4px 0px;
+  border: 1px solid #AAA;
+  background-color: #F0F0F0;
+  border-radius: 5px; /* CSS5 compliant browsers */
+  -moz-border-radius: 5px; /* firefox */
+  -webkit-border-radius: 5px; /* Google Chrome, Safari  */
+  -khtml-border-radius: 5px; /* Linux Browsers */
 }

 td.sidebar p.userblock {
+  padding: 15px 5px 5px 15px;
   margin: 1px 1px 1px 1px;
+  border: 1px solid #AAA;
+  background-color: #F0F0F0;
+  border-radius: 5px; /* CSS5 compliant browsers */
+  -moz-border-radius: 5px; /* firefox */
+  -webkit-border-radius: 5px; /* Google Chrome, Safari  */
+  -khtml-border-radius: 5px; /* Linux Browsers */
 }


I think it would be better to do slight changes to the current 
stylesheet, instead of building a new layout from scratch (thats very 
risky concerning all the testing done so far for the current layout)