Don't worry, the best way to get knowledge about CMSMS is to keep trying, keep solving the problems that you encounter.
Let's see if I can walk you through this, and be a bit more precise in my explanation.
I assume you have the latest version of CMSMS (1.4), if not, upgrade.
Follow these steps
(1) Go to Layout > Menu Manager. Choose the tab "File Templates". To the right of "simple_navigation.tpl" klick on the icon saying "Import template to Database" Name this template "my_menu" (or something else you like it to be called).
(2) Now you will see your "my_menu" under Database Templates. Open it. You will now see some code. This is what generates the menu. It may look advanced, but it is actually pretty easy to understand it if you give it some time. Anyhow, find all -tags in this and add
inside these tags. i.e. menutext}">. Save/submit the changes.
(3) Go to your template (Left simple navigation + 1 column) and find
Code: Select all
{menu template='simple_navigation.tpl' collapse='1'}
change this to
Code: Select all
{menu template='my_menu' collapse='1'}
. Now you have assigned your new menu template to your page template.
(4) All you need to do now is go to the Style Sheets and anywhere add
Code: Select all
li#Products {background: #f99; etc ...}
Remember to write the name in the style sheets (eg "Products") exactly.
This should work, if my instructions make sense for you. Don't hesitate to ask again if you need to.
Best
Z