Notifications Task Manager As Shown
Since the .cab found elsewere on this forum didn't work, I have setup the manual steps below to enable the task manager in the HTC notifications as it is done with the HD mini. If Sprint would of published this rom, they would of done it this way....
Replace NotificationsRes.dll in \windows dir with one in zip (original file already in zip also)
Import notifications.reg (run in file manager) into registry
reset device