Un-Zip.
Backup your old data.pak file.
Open data.pak with WinHex.
Throw chosen .whs file on data.pak in WinHex.
Wait. Wait. Wait.
Done.
UPDATED!!!
-Python 2Lanes Drive WallHack & Vacuum
http://www.sendspace.com/file/2ywf7h
-Python Castle Hera & Kallus Hunt WallHack & Vacuum
http://www.sendspace.com/file/0wzwo6
-Avalon T3 Farming (Flow, Treguard, Aeries, Desayer) WallHack & Vacuum
http://www.sendspace.com/file/lcbrwe
-Crespo A Run
http://www.sendspace.com/file/8thmw2
-Maze WallHack & Vacuum
http://www.sendspace.com/file/h4gy8v
-Aquarius WallHack & Vacuum
http://www.sendspace.com/file/19pdi4
-Draco WallHack & Vacuum
http://www.sendspace.com/file/gdy4ka
-Lazy Abyss
http://www.sendspace.com/file/6b5it0