support thread : http://www.mpcforum.com/showthread.php?t=135788
From a little encouragment from felikz's work, I decided to go ahead and give it a try myself for DODS. Well I didnt go to the extreme's that felikz did. I made the fortifications, some furniture, crates, and some props transparent. If you'd like to go ahead and make more transparent go ahead, It's really easy. Its personal reasons why I didnt go ahead and make everything transparent.
Process:
-Download VTF Explorer here http://www.hl2source.com/files/vtfexplorer13_setup.exe
-Search through VTF explorer under SteamApps go to day of defeat
source.gcf/dod/materials/models/ folder.
-Right click on the models folder within browser section of VTF Explorer and click on Extract. (Put it somewhere like the desktop)
-You will get a series of folders with VMT and VTF files within.
-Use the one VTF file within any folder of this FS Wallhack to continue with the hack.
-Copy the VTF file for example under Italian Furniture italianHacked.vtf. Place this within another folder you extracted through VTF Explorer that you want to use the hack in.
-Now with any other folder you want to continue with this hack, look for the VMT files. Again anything you want to further hack right click on the VMT file and if you have word pad open it in that or regular notepad.
-Below is an example of the code which you need to put in place of the code that is already within the VMT file.
Make sure if you change the name of the hacked VTF file that you change the name of it within the $baseTexture. Also make sure you get the directory right within $baseTexture depending on which folder you are wanted to have transparent models in.
That about does it. If you are having problems PM me.