Success!

I used the .ZIP files since the .ISO files would not behave properly on my computer (XP pro). The ISO files came up as some ROXIO easy-CD creator file that wanted to immediately burn a CD without letting me give the CD the appropriate title.

The .ZIP files worked much better, and were a faster download to boot. My unzip program burped a little over a file called IMAGEF in the A1 folder, but I skipped it and the program still seems to work.

I used the install CD to update my existing version of the EPC driver. I then was able to load up the A1 and A2 CD's via the CD setup menu as described in the install instructions.
These CD's only contain data for trucks and 4runners from 1988 or newer. The EPC CD's on the yankeetoys.com site cover the earlier years of trucks and 4runners, but only up to 1995.

So, if I want to view parts for my 1985 4runner, I have to use the CD setup menu to load up my older CD's. Then when I want to view parts for a newer truck (post-1995), I have to use the CD setup menu again to reload these new CD's from Mike. It's no major deal, just a bit of time for the reloads.

The new CD's work well, but I noticed two things off the bat. First, some of the late model 4runner sections did not have images (could not access image) so they didn't work. This may or may not be related to that IMAGEF file I mentioned above. Who knows?
Second, the part number application to models (#2 on main menu screen) does not work for me. It never did work on my earlier version either, so I don't know where the problem lies. It sounds like this feature was working for you Mike? Any comments?