Utilizing “Sidebar @”

I am using 2.5 and k2 rc4
my site: http://www.jackminardi.com

the sidebar manager that ships with k2 is acting weird on my installation so i switched to wordpress default widgets manager. I want to have a different sidebar on my main page. i already have a different template set up, how do i call the second sidebar? i put what i wanted in in through the manager, but i dont know the code to call it i know i need to change <?php get_sidebar(); ?> into something, but what?

thanks in advance,
jack