I'm sure Chernabog can answer this question for you, but I did want to add this:
There must have been a major improvement in WinMX in the latest version (3.31). After I installed it and began using it, I began to think the WinMX network was specifically for Disney enthusiasts -- everything is available there and I was able to download the *huge* ToT loop right after reading these posts. Search: Tower Terror.
If you don't have version 3.31 get it and install with defaults. I run it from 2 locations (one DSL and one behind firewall) and get the same number of hits from both.
Of course, like any other p2p, you have to be persistent both in how often you search and when you search.