I was replacing the self signed certificate that our company uses for exchange web access, or OWA. I followed the process of creating the certificate request, sending it off to third party vendor etc. Sadly, I wasn't aware that removing the certificate and requesting the next one, would stop OWA working, so I cancelled the request and reverted back to the old certificate. Now I have the new cert, how do I get it to replace the current self signed CA one. There doesn't seem to be any way of importing this into IIS.