How do I modify menus in a desktop theme I have downloaded?

Hi there

I am very new to Stardock so perhaps my problem is a simple one and documented elsewhere for reference....if so, I'm sorry and would appreciate being pointed in the right direction.

My problem is that I have downloaded and installed the DIGITAL REVENGE desktop theme and it seems to work very well. However, in order to 'make it my own' in a sense I would like to be able to alter the pop-out menus from the left hand side ie. internet, tools, graphics, office etc.

How would I, if indeed possible, change the icons that come up or at the very least, the names of the applications they refer to. For example, in the Office pop out menu there is an icon for Microsoft OneNote which I do not have installed on my computer. So, how would I go about changing the Icon and/or changing the name of the application that comes up when I hover the mouse over the icon to say, for example, Microsoft Money?

Thanks in advance to anyone that can help out.

Steve