Remove phpNuke Header & Buttons

I have installed phpNuke at this URL [login to view URL] I have also attached a .jpg image to illustrate the functionality I want removed from the phpNuke pages. The attached .jpg is also the size of the header I want to put in it's place. I am hoping the header can be Flash, but I am not sure if phpNuke allows this. I simply want an easy way to update header with any Flash header or .jpg header at any time. I know .html but I do not know php please place your bid and let's start talking about how it can be done.