Hi Kurt,
First you need to locate your html files for your template. These are located at..
public_html/sohoadmin/program/modules/site_templates/pages/
your_template_name/home.html or index.html
edit the html file(s) and paste the analytics code just before the </body> tag.
Hope that helps. Just for your info, Soho have an excellent dedicated forum.
http://forum.soholaunch.com/Mick