Thanks to everyone who shared.  I really needed the feedback.
I am lucky enough to have a friend who had another mouse that I could try.
It was a LYNX-Mouse ione (Lynx-M9).  It came with a usb/ps2 converter so I
had high hopes.
It works like a charm.  I had to tweak the mouse settings to speed it up,
but its woking just fine now.
Someday, when I move to a KVM (USB/DVI) I'll consider going back and trying
the Logitech mouse again.  All the ones I've connected through the PS2 converter lost wheel control.  But the logitech connected to the USB
directly worked fine, including the wheel.  It is my suspicion that the PS2 converter somehow breaks the wheel functionality of USB mice.
I already have DVI screens.  But I'm using the VGA connectors instead
because of the KVM.
Again thanks to everyone.
regards,
Mark Vollmer
[Non-text portions of this message have been removed]
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