Nice UI.
I really like the lack of title boxes to every window. Very clean looking and nice functionality.
One possible change though that the jpg's made quite evident...a cleric usually has several spells loaded with the same spell icon. This means he/she has to either remember where the spell is or hit the control key to get the spell name to pop up. Maybe a set of spell buttons along the bottom of the screen with the spell name written out? Just a suggestion for increasing the ability of the cleric to send me a heal as quickly as possible. And those spell icons look soooo small. (Please, I don't wanna die. Please for the love of Tunare.)
Again, nice work. When ready, give us the files and let us play with this gem =)
Thanks for your inspiration and hard work.