I recently installed CMSMS and am very impressed with what I've seen so far. I currently have a website online that I'm thinking about converting to CMSMS. I have made a start on recreating the template and importing the css but am having problems with the navigation. The original site (without CMS) is located at:
http://www.osscltd.co.uk
To reach the CMSMS version, visit http://cms.ebcltd.co.uk
I've tried reading up on things like the menumanager and templates etc but am having trouble understanding exactly how the menus work. I basically need to recreate the navigation found on the non-CMS website but cannot figure out how to do it

I know it can be done, and its probably really easy lol
If someone could run me through exactly what I need to do in order to recreate the navigation at http://www.osscltd.co.uk I'd be very grateful!!!
Thanks in advance!
Mark