Hello again everyone.
So I had this same issue...I was trying to limit the startup programs on the 800w because of my terrible experience with the Mogul's RAM. But I've come to realize that this phone runs like a champ and you don't have to worry about RAM. So the solution would be AE Button Plus and then you can map whichever key you want to the LCD on/off. My biggest issue with the LCD was when you were in a call I could not turn it off without hanging up. I don't like waiting for it to time out.
So here's the link to AE Button.
http://ae.inc.ru/aebplus.php and I just linked the LCD to the calendar button. But if you don't want to lose any hard keys you can even use AE to do double or triple taps. So you could have a single tap for LCD then a double tap for the calendar.
Good luck!
Bam