HTTPAPI Help

All,
I am just dipping my big toe into the world of sending a document using
HTTP and have downloaded Scotts HTTPAPI programs.
Unfortunatly, there does not seem to be any documentation on how to use
them.

Can someone point me to any info on how to use the various procedures?
I have a project where I need to do the following:
1) Append the destination string "/import" to the URL:
https://api.traceregister.com/import OR
https://api.traceregister.com/training/import

2) Create an HTTP Request using the modified URL, and set a header
attribute named "Authorization" equal to the Import Key:

request.header["Authorization"] = ImportKey

3) Send the HTTP Request as a POST with the modified XML document contents
as the Request Payload.

The XML document is in a file on the IFS.

Thanks,