This is a patcher like JbOnEs. Well he made this one too  
Just put a fresh set of xips in a folder on your hdd with the xboxdash.xbe file in the same folder
Run the patch and select that folder click yes if it ask you something
After its done patching extract config.xap from default.xip and edit it to how you want your dash.
Import config.xap back and resign with winxip


read http://dillx.net/xboxdash/index.php?act=ST&f=3&t=20&s=e374952cd239b52b9ed1175497455230

for more info