http://bit.do/mp04
Download 0.4 if you do not already have it.
Vice War IV is on VC:MP 0.4.
If you are having trouble running 0.4, install the Visual C++ 2012 runtimes:
http://download.microsoft.com/download/1/6/B/16B06F60-3B20-4FF2-B699-5E9B7962F9AE/VSU_4/vcredist_x86.exe