You should be able to turn the important links off by going to admin -> configuration -> EZ-Pages Settings -> EZ-Pages Display Status - FooterBar and set it to 0

If that doesn't work let me know.

for the centering open stylesheet_footer_menu.css

find the following and make the highlighted change.

dl {margin: 0 auto 3px 0;padding:0;clear:both;height:79px;width:100%;}/*Adjust the height and width of the menu*/