After a confab with the good folks at Intel, the problem is solved.
Basically I just ran Diskpart under the DOS shell provided in my Win 7 Disk. The other problem may have been related to which SATA controllers were talking to the SSD's.
In case anyone else runs into this issue, here's what to do: (Caveat - follow these instructions at your own risk!) [Written for those at my tech level or below...]
- Turn your computer off & unplug it.
- Disconnect all drives except the one you want to Secure Erase (leave your DVD player connected)
- plug it back in, turn on & insert the Win 7 disk.
- Boot from the Windows* installer CD, allow it to load the files, and get to the part where it asks you to choose the time and language.
- At this part press Shift-F10 this will load a DOS environment.
Select disk # (no # sign just the number of the disk you wish to clean)
- keep waiting
- (even with an SSD clean all under DiskPart takes a while)
- When it is finally finished (+/- 20 minutes... ) turn your computer off, unplug & reconnect all your drives, plug it back up & boot normally.
- note: make sure your SSD drives are connected to an intel controlled SATA port - not, for instance, a Marvell or JMicron controlled port (not saying these are a problem per-se - but I don't think the Intel SSD Toolbox likes to work with them... or, put another way, Intel likes Intel.)
Once you're back in Windows
- Right click on 'Computer' (under Start) & select 'Manage'
- left click on 'Disk Management'
- Assign the wiped drive a letter (give it a simple volume) (right click the drive & choose)
- Exit Computer Management & run the SSD Toolbox.
Everything should be functional...