In your admin > tools > ezpages > you can define the location(s) with the red/green buttons.
Also in the admin > config > layout settings > Bread Crumbs Navigation Separator and make it what you want.
To center the ezpages in the top nav look to the css and find
You will have to experiment on using an align versus the float right as the float places additional elements to the right. Adding an align center retaining the float might be all that is required(I do not have an install with these to test)
border: 1px solid #000000;