Hi Valdecir,
you have an interesting approach. I do not know a way to mix Moodle with your own page elements.
Two proposals for a somehow similar solution:
1 You can integrate Moodle into your webpage via frames or an iframe. With Moodle's HTML-Block and CSS you can build within Moodle the navigation block under the monitor exactly as shown on the left side of your image. So you need to do only small layout adjustments to work around the rectangular borders of your frames. The disadvantage of this approach is, that pages with frames or iframes are not accessible.
2 You could design your own Moodle theme as decribed in the Moodle Theme Documentation. There you can integrate your graphics into the header and the footer and build your "not like Moodle looking" page parts with HTML-Blocks in different designs (see above)
I hope that helps
Urs