Calling Excel Macro From Vc++ via DDE

[hari]

Hi,

I have a macro sayHello()
and SayHello1(String s)

I stored this macros in a file .Xls

What is the command for calling this macros from c++.
I found the command from MS articles for VB
But it doesn't work here
The command i gave was "[Module1.SayHello()]";

Thanks
Hari