Part 1) Download here:
 http://s000.tinyupload.com/index.php?file_id=28259734727510826463

Place the files in your 
\Steam\steamapps\common\POSTAL Redux\PostalREDUX\Binaries\Win64 folder.

Part 2) If it doesn't work then you probably need these as well:
http://s000.tinyupload.com/index.php?file_id=09164168051488499538

Place those two files here...
Steam\steamapps\common\POSTAL Redux