

Just Put the .exe in a Directory of your choise, no Install needet.
How it works: 
Upper left you find the 5 Tabs sortet by Category, each with a few Options.

Upper Right you see a white Text Field, if you load a File, the Contend of the File gets written in there. 
Also, if you Change an Option, it will be displayed in here, but NOT saved. Call it Preview if you like.

Lower Right, you find a smaller white Text-Field. In this Field, occuring Errors will be displayed. 
It`s more for safety, normally it`s empthy all the Time.

Lower left are Two Buttons, "Load" an "Save". Load Opens a Dialog, in that you can pick up your "UTEngine.ini"
The File is located at [...]My Documents\My Games\Unreal Tournament 3\UTGame\Config
If you use a Startup-Entry with the -nohomedir in the Command-Line, its located at [install-dir]Unreal Tournament 3\UTGame\Config
Once you loaded a File, a "Options.ini" will appear in the Directory you run the Tool from, in this File he saves the Default Directory 
of your UTEngine.ini.
After you loaded the File, the Tool will write the whole Contend into the upper-left Text-Field, read out the Values and set the Checkboxes and Slider.

I Have written the Tool a.) to train my Programmer-skills (or so..) and b.) to find out what the Options do in Detail.
So, dont ask me about the effect of Option xyz, i dont know jet.
If you find out what an Option makes, please write it into the Forum of Epic-games, http://utforums.epicgames.com/forumdisplay.php?f=335
Time by Time, i will Add Notes to the Options who explain the effect.

So, Options set, ready to save. When you hit the Button, the Tool will create a Directory (in case it`s not existing already) called "Backup" and put a (you guess right) Backup of the Actual File
in it, THEN it writes the new Options to the File. 
The Backup-files have a Date and a long Number in it, the Number occurs internally and stays for the Daytime. 
At Midnight, it counts 0, at 6:00 AM it counts 0,25, at 3:00 PM it counts 0,75, and at 11:59 PM it counts 0,999, i use this Number to
make the Filename unique, and it can be used to identify the newer files, in case you want the old Options back.
If you want an older Version back, you have to restore the old File by your own, there is no Function in the Tool.


Also, the "TEXTUREGROUP" Options for Min. and max Texture sizes is missing, cause the Readout-routines would nor correctly read and set these Values. 
Unfortunable you have to use Options provided ingame of UT3.



If you want more than pure Graphic-Options, Brad G has a Tool for this in Charge, take a look at this Thread:
http://utforums.epicgames.com/showthread.php?t=594723


Readme V1, 26.12.2007.00:56