Ubuntu with Mac OS X Theme

Hello everyone,
I'm using Ubuntu for quite some time. I wanted to change theme. So I put the theme of MAC OS X.
Now my theme is that of MAC OS X, I just one problem: I can not get the dashboard to the front windows to take the entire office. If you look closely you will see that enbas the scoreboard prevents the window to expand. What I want to do is to put the scoreboard first and use the plan back to use the entire desktop.
At worst, if you know how to put the scoreboard in the background will be enough. Thank you in advance for your reply

right click-> configure desktop-> taskbar-> uncheck always show on top or something under it, it should be kde but should be similar under gnome.

Under Gnome I can not find what you described me. Personally I think the gnome-level editor for changing options.

If yo uhave the other theme, Go to that theme (/home/<usename>/.themes/<name of the theme> and see if you can find the specific .png file. When found drag it up to the panel and the panel change.