The change is permanent with this method. The Address entry should be visible again after rebooting the computer. type xcopy C:\browseui.dll C:\Windows\System32\ with c:\browseui.dll being the location of the SP2 version of browseui.dll.Press F8 during boot process to load the advanced boot menu.The file is a system protected file which means that you need to replace it the following way:
This requires access to the Service Pack 2 version of browseui.dll. The second option is to replace the browseui.dll file which handles the interface with a previous version that still included the Address Bar.