Show/Hide Comments Help

I've been trying to figure out how to show/hide comments on the main page and I'm trying to follow the Thingys & Doodads - III instructions but they are confusing me a bit. It says to copy and paste a bit chunk of code "between the tags in every page that you want to utilize the script" and my main question is 'What tags?'. Also, and I guess this one is directed towards Madfish because my sidebars are in different sub-templates, do I have to do something special in this case?

Either way, can someone help me figure this out, because I can't, and I'd like to get the roll down thing working (because lets face it, everything beyond my main template is a nightmare on my site, and I have no earthly idea how to fix it... and my motto is "if you can't fix it, hide it from prying eyes!").