Hi, Dave-
I bet you could install it on the thumb drive, but software
installation is more than just storing the exe file: there are hooks
into the computer's registry, for instance. This is just a guess: you
could install and run it from the USB device, but likely only run it on
that machine. And if a program is on the registry but the computer or
registry doesn't locate that software (for instance, if that USB device
was not installed) I'm not sure if error messages would result, or
what. Let us know if you try!