URL moniker into google did the trick[^] Good luck :) Ryan

I think that you need to add something like this to registry: HKEY_CLASSES_ROOT\makecall\@ = URL: makecall Protocol HKEY_CLASSES_ROOT\makecall\URL Protocol = "" HKEY_CLASSES_ROOT\makecall\DefaultIcon\@ = C:\YourIcon.ico HKEY_CLASSES_ROOT\makecall\shell\@ = open HKEY_CLASSES_ROOT\makecall\shell\open\command\@ = "C:\YourApp.exe" "%1" i'm only pointer to myself

Thank you very much for your help. After I studied some DDK documents, I relized you r a real expert in this area! Since WinXP introduced a WZC service, does this mean in an XP box, I needn't write a NDISUIO driver myself, instead I can use WZC to do everything I want? However I searched MS site and found very few information on WZC, almost get no information on how to use WZC service at all. Could you give me more tips? Thanks so!

Is there any API provide such things? If we have any API it will be more helpful. or Does it have any other way to do this? Pls help me. Thanx in advance. regards Halid:confused:

You might want to check these following articles: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32\_networkadapterconfiguration.asp http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/about\_wmi.asp I hope that's help. "Computers are like Old Testament gods; lots of rules and no mercy." -JosephCampbell