Proving yet again that I am incapable of uploading a UI fault-free, here is the UI with the correct, functional version of the quest journal, with both the lookup buttons and the achievements window. I also accidentally included a file that's not supposed to be there. It's not hurting anything, but if you have the file eq2ui_mainhud_target-midalt.xml in your UI, feel free to delete it.

More thanks to Zenubi, who kept tweaking the graphics settings until they had a smooth progressions from maximum performance to maximum quality. He's spent most of this summer tweaking these things folks! There's now a variety of graphics settings presets available, from laptops to high-end gaming systems. Also, since that Custom Preset Customizing program wasn't really working anymore, I removed the program. Those three buttons now change which shadows are used - GPU, CPU, or none. The GPU one also sets the max draw distance to max (for rendering harvest nodes), so if you turn on GPU shadows and don't want the draw distance that far out, make sure you pick a graphics setting after the shadow setting.

I've added the AA star to the target and implied target windows. Also, I put EQ2i and Zam search buttons on the target window (but not the implied). This was for also-frequent queries of "Is that NPC/mob for a quest? Where do I get it?"

I hope you find these additions as useful as I and my guild have!

Some highlights:

Click-to-cure in player, group, and raid windows (advanced mode) - and it no longer switches your target when it casts the cure!

Compass now has two indicator lights on top - left one corresponds to the first /loc number, right one to the last /loc number. If the lights are green, going in your current direction will increase the corresponding number; if red, decrease. (And many, many thanks to Milquetowst, who first customized a compass UI to do this!)

Breath and casting windows with unique graphics.

Target and Implied Target windows have the new threat meter embedded! Target window also has buttons to swap between simple and detailed con view, to assist target (assist button is under threat indicator), and to look up the target on EQ2i and Zam.

Start button has quick-change graphic quality buttons (including 3 customizable ones), volume change buttons or sliders, and toggles for bags, the minimap, knowledge book, quest journal, in-game browser, ThorUI Notes, helm visibility, zone reuse timer view, and night vision.

ThorUI custom windows have been named as such, so editing the eq2ui_journals.xml/eq2ui_mainhud_xml files is no longer necessary when SoE adds new windows.

A summary of the customizations is included in the .zip file. Enjoy!

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Release notes -
20090927 - Put in the correct version of the quest journal, and removed a file that wasn't supposed to be included. Yes, I am fail.
20090925 - More graphics settings fine-tuning by Zenubi. Lookup buttons for EQ2i and Zam added to the quest journal and target window. AA indicator added to the target and implied target windows. Background on target/implied windows hard-coded to transparent.
20090620 - Zenubi was kind enough to send me various windows I didn't have, and correct some that weren't working for him like they were supposed to. Also, for some bizarre reason the Start Button disappeared with GU 52, corrected that.
20090401 - corrected chat window
20090331 - Initial relaunch