2011-02-26 update:

MIUI team has just officially released version 1.1.14 dedicate for Desire HD, no more porting from other platform needed. And it supports English, though the screenshot is in Chinese.some screenshots attached.You can find the partial English UI setting instructions here But after setting the locale, most of the UI is remaining in Chinese. Need a developer to change the language file to English. The download link for ROM package is listed above.How to flash--------------------------------------------1. Make sure your HBoot is already S-OFF.2. Have clockwork recovery installed.3. Copy the zip file to SD card and flash.Please do a data wipe and cache wipe before flash the zip file. The whole process takes about 5 minutes and after the first Hboot screen, it loads to MIUI themed splash screen quickly.