Xbox 360, HD Dvd Addon Drive & HD' TV's! HD!

Oh Aye, i've joined the revolution.
Just bought myself a LG, HD LCD TV.
Specs available here;
http://www.aria.co.uk/Products/Displays ... ctId=29912
I know that this isn't a true 1080p HD TV, which everyone seems to be raving on about. So thats the TV information Done.
The information or help i'm looking for is that; i'm going to be purchasing an Xbox 360 pretty soon, with a add on HD Dvd Drive for it. Because My TV is (i think?) 720p, will it play HD DVD's in a GOOD SOLID, NOTICABLE Difference to standard DVD's? I know there is quite a bit of difference in quality wise between 720p & 1080p, but end note. HD Drive on 720p.. Worth it or not?
Many thanks in advanced for any help/ reccomendations.
Regards.
James 8-)
Just bought myself a LG, HD LCD TV.
Specs available here;
http://www.aria.co.uk/Products/Displays ... ctId=29912
I know that this isn't a true 1080p HD TV, which everyone seems to be raving on about. So thats the TV information Done.
The information or help i'm looking for is that; i'm going to be purchasing an Xbox 360 pretty soon, with a add on HD Dvd Drive for it. Because My TV is (i think?) 720p, will it play HD DVD's in a GOOD SOLID, NOTICABLE Difference to standard DVD's? I know there is quite a bit of difference in quality wise between 720p & 1080p, but end note. HD Drive on 720p.. Worth it or not?
Many thanks in advanced for any help/ reccomendations.
Regards.
James 8-)