Create Yahoo/Gmail Account from my windows Application

Question

I want to create Yahoo or Gmail account using my windows application.
 
Is there any API's available for this? How can i integrate that API into my c# windows application
 
I'm having the required fields for the registration in my Windows application form. How to pass these values into the yahoo or gmail site.??
 
I need your Suggestions.... 
 

 
Thanks & Regards,
Venki..