QUOTE(NYZO @ Mar 31 2007, 11:40 AM)

i too have a PAL xbox but do not have HDTV so have never had to do this but I think(don't quote me on this) :
MS have made it so you can only get HDTV on an NTSC XBOX. Try switching your XBOX to ntsc video mode - use an app like "enigmah videomode switcher" which is availible from the usual places to switch into NTSC. Reboot to MSDASH and as far as I know you should now be able to enable HD modes.
hope this helped. let me know if this works because I should be getting HDTV soon.
did that but no HD options...