i told u, maybe there is a another way to do!! i really looked at the net before u reply the first message! :) i read your 1st message about 2 hours ago before i replied. anyway, thanks again for your advice! ;)

thank you mik, i will look at webclient class in google!! asamay

thank you so much!! it looks easy to do! :) asamay

thanks, its not a pure P2P application as u told, there is a discovery server for authorizing and locating sharing file list and some permissions about them. i found an article about P2P programming with .NET technologies, here it is http://msdn.microsoft.com/msdnmag/issues/01/02/netpeers/default.aspx it will be very useful for developing P2P app with .NET thanks again. asamay