Object reference not set to an instance of an object

Hi expert,

I have downloaded the callEvent application and hope that I can use this application to send SMS to my pocket PC emulator. However, when I click the connect button an error message saying that "Object reference not set to an instance of an object."

I try to debug it and i found out that the following bold code is the cause of the error message.

m_conman = new Microsoft.VisualStudio.DeviceConnectivity.ConMan();
m_conman.SetLocale(1033); // English
m_conman.Initialize();

m_ds = m_conman.DataStore;
m_platform= m_ds.Platforms.FindPlatformByInvariantName(platformName);
m_device = m_platform.FindDeviceByInvariantName(deviceName);

In addition, I have already read all the stuff about callEvent application in the this link but I still have no idea how to connect the callEvent application to my Pocket PC emulator.

PS: I am using visual studio .NET 2003 and I am new to moblie application.

Please help me on this urgent problem! Thanks in advance.