According to the document,"Both computers must have a copy of MSGRP2P.xml in the Messenger program directory. ",whereas when I was testing the sample of "Tic Tac Toe" with my friend who had not MSGRP2P.xml in the installing folder ,everything went well.
That is,I set up a web site in my PC using IIS for the "Tictactoe.htm" and copy the MSGRP2P.xml (edited correctly) to MSN Messenger's installing folder.Then I invite one of my friends in conversation window to play the "Tic Tac Toe" game,he saw the arena on the right side of his window and clicked mouse on the board.
How does the remote user locate the "Tictactoe.htm" without a "msgrp2p.xml"

Is msgrp2p.xml necessary for both users?
shailu155
When an Activity is provisioned on the network, then users no longer need to install each .xml file. All the items under the Games and Actities menus (like tic tac toe), are network provisioned.
Any applications submitted for the contest, or post-contest (through the contest submission page but no longer counts for the contest) will be provisioned to run on the network once reviewed.
Todd Biggs
Product Manager, MSN
http://activity.msn.com
http://www.worldsbestapp.com
Lamon