HOW TO INSTALL     AND      UT3 Patch 5/ titapack Links
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They are not difficult install mods. unzip the folder with map files .ut3 , .t3d , .ini.... and place it in:

Documents\My Games\Unreal Tournament 3\UTGame\Published\CookedPC

In the Case of Any mods (EXCEPT the multiplayer mods).
Unzip the downloaded folder and place in the same folder.
use some sort of use Unzip, 7Z good and free.
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Download 7z here for free 
http://files.uberdownloads.com/7-zipe.html
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UT3 Patch 5  Links 

UT3Patch5.exe Size: 328 MB

http://news.bigdownload.com/2009/05/04/download-unreal-tournament-3-patch-5/

http://www.fileplanet.com/199547/190000/fileinfo/Unreal-Tournament-3---Patch-5
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TITANPACK
Size: 916.1MB
Typ .exe
http://www.filefront.com/13414006/Unreal-Tournament-3-Titan-Pack/