You don't have an officially signed certificate (which costs money). Verisign is such a company http://www.verisign.com/ where you can get a certificate. I think you should be able to import your self signed cert so you don't have to click yes everytime.
I have tried to make cert many times but still can't import the cert. Would you please telling me what I should do to make a qualified self signed cert? Thank you very much.
