I am working on a PS/2 and/or USB converter to HIL. I have had the prototype in use with my HP9000/340 since this spring. Contact me off-list and we shall see what we can do. I guess there is no shortage of PS/2 or USB keyboards "down under"?
Yes, I developed this because I bought a 9000/340 without keyboard and spare keyboards were as expensive as the original computer...
Anders