The ICT <http://www.microsoft.com/windows/using/tools/igd/default.mspx>is a nifty tool, mostly only for home networks though , to test your network and router and tell you what networking features your router supports. One feature it tested that I haven't had time to really look into or read about that is only in Vista and 2008 is called Explicit Congestion Notification. (ECN) Read more here: http://kenzig.blogspot.com/2008/10/internet-connection-testingtool-and.html Jim Kenzig Blog: http://www.techblink.com ***************************** Windows Vista Links, list options and info are available at: http://www.VistaPop.com *****************************