Hi thanks for the resonse.
The pem files include a Client Certification which I believe I need to be able to prove my machine is authorised to use the API I'm trying to use.
A lot of googling has informed me that I might not be needing to install them to IIS at all, as we are the client making the request in this case at least.
Evidently I can use ( http://msdn.microsoft.com/en-us/library/windows/desktop/aa384055(v=vs.85).aspx ) to specify the certificate in the Certificate Store (renaming
to cer and importing in MMC worked perfectly), however when I do this and run the script I just get error:
WinHttp.WinHttpRequest error '80072f0c'
A certificate is required to complete client authentication
If this is the solution I'm meant to be looking for then the case may be I'm asking in the complete wrong place...
I'm not familiar with ASN.1 or certificates at all really as this is a completely new scope of work for me. I'll add it to the list of things I'm furiously looking in to right now.