Speech Object and Speak Method

I am playing with the Speech object and speak method and can't get it to work. This seems pretty basic. I'm using Excel 2003 on Vista.

My test code is:

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When I run the macro, I get

Run-time error "1004"
Application-defined or object defined error.


What did I do wrong? Where should I have looked (what reference) to figure this out for myself.

From the microsoft site:
Using the Speech object
Use the Speech property of the Application object to return a Speech object.

Once a Speech object is returned, you can use the Speak method of Speech object to play back the contents of a string. In the following example, Microsoft Excel plays back "Hello". This example assumes speech features have been installed on the host system.

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Note There is a speech feature in the setup tree that pertains to Dictation and Command & Control that does not have to be installed

Have a look here also please
http://support.microsoft.com/kb/277808