Your processor does not support long (something). Try a 32bit distribution.
From googling a bit on that it seems to be that the version on that disk is for 64-bit hardware.
I looked at the RPM contents of all 6 readable CD's and the filenames all contained 586 in them. Am I mistaken to think that 586 is for 32bit processors? If so, the site I ordered them from did not mention this and doesn't even list a second distribution for 64bit.
No you're right. Looking at the mirrors for 2006 it looks like the 64-bit packages should have x86_64 in their names, not i586 ftp://ftp.proxad.net/pub/Distributio..._64/media/main
I'm not sure what the problem is but it'd be good to work out which CD (if any) of your working CDs is an install CD. To do this find the CD with a directory structure that looks a bit like this:
autorun.inf index.htm MD5SUM README.txt
COPYING install/ media/ release-notes.txt
Dkms/ INSTALL.txt misc/ VERSION
doc/ isolinux/ Modules/
dosutils/ lang/ pkg-10.2-Limited-Edition-2005.idx
Firmware/ LICENSE.txt Plugins/
The above is the directory listing of the DVD equivalent of the 7CD version for 2005LE. There should be some files/directories like autorun.inf, index.hml, install.txt, isolinux that are only on the first CD, ie. the bootable installation CD. Find which one of your CDs has these.