I'm using version 1.3.8
My header navbar looks like this :

Home | My account | Link | Search |

What I'm trying to do is to make sure that the Shopping cart will permanently be in the header, whether someone is logged in or not, like this:

Home | My account | Cart: $0.00 | Link | Search |

and if someone adds something to their cart, it should display something like this:

Home | My account | Cart: $20.00 | Checkout | Link | Search |

I'm not a programmer so any help would be appreciated.