Just in case if anybody needs info on this:
You can download ver. 7.1.16 from here:
And also an upgrade for ver. 7.1.rc17 from the same site(s).
Basic testing and functionallity of 7.1.rc17 verified with Slackware 10.1/current.
I used rpm2tgz to convert the fcc-7.1-16.i386.rpm to a tgz, and then
followed the instructions for upgrading to rc17.
[edited] - I had to do this by necessity today, checked LQ for any info, and this was
the only post about FirstClass - so once I figured it out, I shared the info. Good Luck.