Here is an idea:
At some point Microsoft has released Service Pack (What a shock) for HPC. This SP was released to manufacturers so they can put them together as needed. I downloaded couple of them, including one for SHARP Mobilon PV-5000, which has 3922 Toshiba CPU, and here is what I found:
Looking at the size of these files it's probably safe to guess that they contain needed executables. To be honest I tried to install them but it didn't work: "Installation failed try again..." or something like that. Then I tried to install them manually opening the .CAB file and changing the extensions as needed (.DAT, .DLL, .EXE) This time the error was all too familiar: "Cannot find blahblah or some of its components" It's a lot closer, but no cigar.
At that point I gave up cause I don't need those apps anyway.
I can send all files that I found (about 6MB worth) to Randy and he can house them on his site unless there are objections.