Thanks Rosali,
I feel a bit silly now, I'm laughing at myself.
I was thinking it seemed a bit odd to use an address on the net...
I had downloaded, unzipped and untarred already, but somehow misunderstood the required substitution, and my mind must have been in idle for alternate interpretations.
I've been doing mostly non technical activities lately, so maybe this is a sign that I'm losing my edge.
Thanks again, it's working now.
Mark