Luth, 133% scale versions of both the Player and Group windows are available for download as seperate pieces. Links to them can be found in the first post of the Nightfall download page or by clicking the "Interface Author" button under my icon.
Location and text allignment of the Health percentage in both Target windows can be tweaked in Notepad. Off the top of my head, search for Text="100%". You should find 2 sets of text objects for both health and power, first set is for the old con system, second set is the new con system. Tweak the location numbers as you see fit. You'll probably need to add TextAllignment="Right".
Drethic, sorry there isn't an easy way to decode window settings.
Letterbox size is controlled by a slider and checkbox in the Game Options window. Nothing in my UI files affects the letterbox size. Many ppl disable the letterbox entirely
