Smaller window

[AndreiAtreides]

Hey,
I just bought a new 40" LED ( 1920 x 1080 ) and would like to view 4 or so game windows at once. The pb is that I can't squeeze the window after a certain limit, and that limit is lame, especially vertically. It takes some 4/5 of my vertical space when I would like to squeeze it to some 1/2. Also would be nice to be able to make some in-game windows smaller, like broker, guild, persona, craft, loot window and such.
I filled a SoE support case and they told me they have no idea as they don't have such big screens to test it, and that I should try alternative UI's maybe.
So my question is: is there any UI out there that would allow me to adjust these windows and most of all, the main game - client window, make them smaller? thx