Steps for converting your cache files into the correct files, in a'tarded terminology ;P
1: Open your UT main directory, this is usually under the MY COMPUTER button, open it wherever it is on your system.
2:Open the file folder named CACHE
3:Find the CACHE.INI file, open that.
4:Now you should have 2 windows open, the actual CACHE.INI and the CACHE folder with the .UXX files that are downloaded from the servers.
5:The .UXX files look like this: 1CC76ED84AD7C54F73E5A3BF62328C5F.uxx
6:In the CACHE.INI you have open there is a list of files that look like this : 1CC76ED84AD7C54F73E5A3BF62328C5F=complexB.utx
7:Highlight the latter part of the file description that is displayed in the CACHE.INI, RIGHT CLICK, select COPY of only thre highlighted part{ie the files true name}
8: Find the same number/letter identification in the CACHE folder, highlight, RIGHT CLICK on it, select RENAME, PASTE, this will change the name of the file from the .UXX to whatever the file is supposed to be named, in the case above, i changed the .UXX file in my cache to its true form, which is a .UTX file, after you've changed the name, hit ENTER, then it should change it to the correct file extension.
9: I then remove these renamed files to my desktop{or you can use a new folder you created as well}.
10:Close all the windows, then reopen the UT main directory, place all the new files you have changed from your cache to thier corresponding folders.
.UTX-TEXTURES
.UMX-MUSIC
.U-SYSTEM
.UNR-MAPS
.UAX-SOUNDS
so in the above mentioned case, the complexB.utx, i would place in the TEXTURES folder, please remember all .U files always go into the main UT SYSTEM directory, most of the time all the other files go into the UT\INFILTRATION subdirectories.
Any questions or was that clear enough?