Changing SSL Certificates

[vernon <ve...@b2...>]

I have my own SSL keys I've purchased on my box and would like Webmin to use 
those so I am no longer prompted with the certificate being invalid. I've 
try putting in the private and public key under Webmin Configuration > 
Certificate Authority but still have the same key issued previously by 
Webmin. Am I doing something wrong? Am I able to use my own keys with Webmin?

Thanks