Simply scroll down to the last section of the xpe-custon.inf file and comment out the line that has the taskbar on the top then uncomment the line that has the taskbar on the bottom and decide whether you want to hide or unhide it. To change the Go button, simply replace it in the plugin Nu2menu (rename your chosen file to nu2go and copy it overwritng the original) with the one that you want. I use the nu2start button.