You need to open up home.xml in either the Pal or Pal16x9 dir depending on if you use 4x3 or 16x9 (and yes if you use ntsc you still open the pal ones)
look for this ( It will be in there twice and you will want to change both )
CODE
<control type="button" id="9">
<description>Remote Push Button</description>
then you will want to change the lines
<label>31009</label>
<onclick>XBMC.ActivateWindow(114)</onclick>to somthing like
<label>DVD2XBOX</label>
<onclick>XBMC.RunXBE(e:\apps\dvd2xbox\default.xbe)</onclick>you will then probably want to find this ( also in there twice )
CODE
<control type="textbox">
<description>Remote description multiline</description>
and change
<label>31134</label> to somthing that says somthing about dvd2xbox