...I am trying to use the vertigo theme but I want some of the functionality and design that is available in another theme. I want to use one module (from the second theme) and demo content in it. Meaning the same css for that particular module will need to be used. I tried installing them as stand alone but I cannot replicate the look.
If it's an RT component, did you check in the tutorials and guides for that template and see if there was a guide for moving the component from that template to others?
If you want the demo content from the other template, you'll need to install a copy of it with the Rocket Launcher and then access the code.
More information or a link to your site in this thread would be needed here to assist you. further.