New link categories in sidebar

I just loaded the lates verison of WP for a new blog. I have created a new link category called friends but I don’t know how to get it in my sidebar. I have this code:

<?php get_links(-1, '<li>', '</li>', ' - '); >

which shows all ny links (friends, blogroll etc). I wan’t to have them under seperatre headings. Old installations of WP have the following code to dispaly link categories:

<?php get_links(2, '<li>', '</li>', '', TRUE, 'name', FALSE,TRUE);>

<?php get_links(3, '<li>', '</li>
', '', TRUE, 'name', FALSE, TRUE); ?>

I have tried changeing the -1 in the example up top and have also tried using the old method. No luck. I have also noticed that my links categories do not have a unique ID in the dashboard. Please help.