[Wine] invalid security certificate sec_error_unknown_issuer

Hello,

Today I try to get http://www.paynorakepoker.com/ to work- everything works 
fine except the cashier which has the message


> www.actionteller.com uses an invalid security certificate.
> 
> The certificate is not trusted because the issuer certificate is unknown.
> 
> (Error code: sec_error_unknown_issuer)


After researching it seems steam had a similar issue before because the 
certificate chain was incomplete and people would add exceptions.

I only get a dialog though with an OK button- How can I add an exception and 
get this to work?

Thank you.