Add new voice to text to speech

In order to add a french voice i downloaded from the net RSSolo4FrenchVirginie application and installed it.
But when i clicked text to speech in the control panel ,i didn't see the new voice in the voice selection listbox.
When I searched for "sapi.cpl" ,I found many located in differents directories
If i click the sapi.cpl located in C:\Windows\SysWOW64\Speech\SpeechUX, i can see the Virginie french voice.
If i click sapi.cpl located in C:\Windows\System32\Speech\SpeechUX ,the french voice is not added
I tried to copy sapi.cpl but i have no permission.

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