For better or worse this is the method I use. I know some people on the forums read "DLL INJECTION" and run the other direction for various reasons. But it's really simple....
1. Download warextdll.dll
2. Download this
3. Open Warhammer and log in
4. Run omfgz.exe
5. In "Choose your DLL's", slot 1, browse for and select warextdll.dll
6. Where it says, "Process EXE name:", type in "WAR.exe"
7. With the command prompt (Lua Shell) open you can close omfgz.exe
Injection Complete! Now whenever you want to inject HansW's DLL just open omfgz.exe and it will auto-inject if it finds both the DLL and the warhammer process going.
Alternatively, you can select "manual" in omfgz if you don't want it on automatic.