JJ1 doesn't work!
 

I have just bought JJ1 of ebay, but it doesn't work. Can someone please help?
(I have windows XP)

A minute of searching would've found you the answer.

Use either DOSBox or TPPatch, both of which you can find through Google.

TPPatch doesn't work under XP though. I use DOSBox.

It does work for many (such as myself), but, as to be expected, results vary from computer to computer.