Ahoy Comrade!
it is not a simple task to install a mod of DW in Linux. The Problem lies in differnce of Filename reconition in Linux and Windows. Windows Ignores capital letters but linux does recon the difference between capital and small letter, in practice this means that when you copy something in a folder, while in windows it will overwrite you will have a duplicate in Linux.
For exemple: Folder A has a file "test.txt" you copy the file "TEST.txt" in the folder.
in windows "test.txt" will be overwritten, but in Linux it will not, but you will end up with two FIles "test.txt" and "TEST.txt". This CAN cause problems.
Second, the MODs DW uses to install some *.bat file, they can't be executed by WINE (LINUX)
SOLUTION
you need Windows for that, but you can run windows in virtualbox:
(forget about run the game in a virtual box, I doesn't work, just good for install Mod)
1. First you need WINE
2. Install DW in LInux
3. Install DW PATCH 1.04 in Linux
4. Copy game folder to windows, Delete the one in Linux
5. Install Mod in Windows
6. Insert the the folder to your Linux
7. RUN
BTW: I run DW with RA Mod 1.39 in openSUSE 13.1
