Thanks all for your responses.

I have not responded sooner because I spent yesterday going to MST wher I spent almost $900 on the components to build  new Intel 64-bit PC. (In retrospect, I think I should have just ordered a second hand PC from EBay. I am sure I could have got considerably more bang for buck there, but I am now committed to the course I have taken. )

Yes, it's my own Honours Year project of 1999 I want to implement.  I think it still has some potential for improvement, even  after all this time. If I don't manage to get it to run and am not able to modify it, I won't be that bothered,  it it would be nice if I could.

No, I don't remember the hardware requirements of 'Multipi'. It is over 10 years since I wrote it.  The intervening time and my diffuse axonal brain damage has made my memory of it not as clear as it once was.

Anyway, I would still like to be able to use a computer that is a bit closer to the leading edge than 32-bit processors.

Thanks,

James