The installer will install a WinMX v3.54 beta 4 if you choose the XP/2000 operating system and the ws2_32.dll patch to fix your connection for WinMX.
That is it.
The ws2_32.dll has as one of its functions a block list for Flooding IPs of the RIAA to help protect you and the network from them.
That is the extent of what you get..