Not really having any personal experience with BITS over SSL ...
BITS Client can download files from any HTTP/1.1 compliant server.
but you
might find some helpfull info over here, a downloadable SDK with some sample files :
http://www.microsoft.com/downloads/d...displaylang=en
In case anyone wonder what this is all about :
Background Intelligent Transfer Service (BITS) is a Windows component that asynchronously transfers files in the foreground
or background, throttles the transfers to preserve the responsiveness of other network applications, and will automatically
resume file transfers when a computer is restarted and a network connection is re-established (ie. used by windows update).