Erm, I share about 2.5 gigs and I can get on to about 10 servers.
I have no problem sharing files as long as I can get everything I want and DC++ has had everything I have wanted so far. I highly suggest it.
How are you confused with WinMX? It is pretty straighforward. Do you need more servers or something? I have attached a ".wsx" file of Open Nap servers for use in WinMX.
Just open WinMX, click on the server tab, and click OpenNap Protocol Servers. Then click "import .wsx" and open the .wsx file I have attached.
That is the only challenging thing I can think of with WinMX. Searching and downloading are pretty easy.