Download here : http://www.iconzarena.co.nz/downloaditem.aspx?did=622
I installed it last night, and had a ball online. I had played one of the earlier versions over a LAN and its always a laugh, so getting a free internet version is even better :)
ICONZ are running a server so pings etc are nice and low not that it matters with this sort of game anyway.
Anyway if you are playing, add me to your friends list : xpdnz (Screen name : XPD^)