Sorry , i found some information about my question
In this page (How to register a Activity)
http://roosokad.blogspot.com/2008/03/this-article...how-to-create.html
and this page ( more information about MSGRP2P.xml )
http://msdn2.microsoft.com/en-us/library/aa751045.aspx
but i have another question now...
Edit MSGRP2P.xml ..and change URL tag to Google.com
when i use this code to call activity for test
number = 7
email = "xxx@xx.com" ( my msn account address )
new ActiveXObject("MSNMessenger.P4QuickLaunch").LaunchApp(number, email);
nothing happend.....ORZ....
when i use number = 99995068 ( some real Activity ID )
messenger show Error : This computer can't open this program
No any log in system event....
is there something i have to allow or messenger or IE ? ( something be like activeX )
