Please Help ** Styling and Links not working**

I just installed my first wordpress blog and made a custom theme for it and am having a few problems. My experience with this is obviously extremely limited as I just learned how to do it but Im having 2 major problems (and a bucnh of minor ones, but lets fix the big stuff first)

1. I am using a functions.php file with the following text to call the dynamic sidebar

‘<?php
if ( function_exists(‘register_sidebar’) )
register_sidebar();
?>’

In my sidebar.php i use the following code to call it –

‘<?php if ( !function_exists(‘dynamic_sidebar’)
|| !dynamic_sidebar() ) : ?>
<?php endif; ?>’

All of the widgets are loading inside of a huge UL and i want to remove this bullets. how do i do this?????

2. Almost none of the links work in the sidebar. The tag cloud has about two tags that work. only 4 out of 5 categories work, the calendar does not work, the about page doesnt work, HELP!!!!!!!!!!!!!!!

here is my blog address –

http://www.jasonaron.com/WPBlog/