Read this also
http://www.gildor.org/smf/index.php/topic,660.0.htmlAnd UE Viewer is a cmd tool, so you need to use it through the Command window (Start->Run->cmd then navigate to your UE Viewer directory) Here's a example
Let's say you have UE Viewer on Desktop, extract the rar and you have a UE Viewer folder, now go to
Start -> Run -> cmd, a window should prompt up now and from there you navigate to your UE Viewer folder like this (I'm on Win7 so default directory is C:\Users\sn00p\) now tell the command window to go to Desktop in this way "
cd Desktop" (without quotes ofc) and now the directory should be
C:\Users\UrUsername\Desktop now do the same thing for UE Viewer tho (cd UE Viewer)
Once your on UE Viewer folder with cmd window, tell the umodel.exe to export/view your .upk/.xxx package, but since you want to extract them this is the main command "C:\Users\UrUserName\Desktop\UE Viewer\umodel
-export -all PackageNameHereYou can also write
umodel without -export -all etc to see the help, supported games and also some other commands.
Sorry for my english also...