Fed up -
I checked my devices list and saw the same thing as the instructions on the Toyota-4runner.org indicated. Just in case something went wrong, I uninstalled the drivers and tried what the Toyota-4runner.org instructions suggest.
This is the software/cable setup I purchased from Amazon:
When I plug the cable into the computer without the drivers installed, I get the expected errors. When I try to browse to the location of the .MSI, there are no .INF files out there for the XP USB Driver Installer tool to find, so that effort is a bust.
Reinstall the drivers via the .MSI and click the "updater" icon that's now on the desktop. Follow the instructions as from the Toyota-4runner.org site and get the exact same results.
I then de-install and re-install the Techstream software.
So many others have had excellent results using either this package from Amazon, or other sources (cable only and downloading the software alone, etc) that I'm really confused as to where the problem is.
When I reviewed the .AVI that came on the CD, the installation doesn't match the software that's on the disk. The installer for the cable drivers is the same, but they show steps after the running the Techstream install that don't match. Specifically, they show a folder called "Toyota Techstream Activation" (or something similar). After the Techstream install is complete, they copy a file called "MainMenu.EXE" from this folder and overwrite the same file in the folder where Techstream resides. Then when they launch Techstream, a screen appears immediately asking for an activation key. They open a .TXT file in that same folder and copy a long string from there and paste it into the proper field in Techstream.
The version of Techstream that appears in the .AVI is 8. something. The version that installs from the MSI that's on the CD is 9.1 something...