Thanks for all the advice. I have ordered the joystick recommended by spirantho. Just found out my Amiga will be arriving Friday so I will have a play around and I am sure I will be back with more questions!
Goodluck with the new kit. Hope you find a way of getting ADFs from the PC world onto an Amiga. It can be a challenge on a vanilla A500.
It's threads like these that remind me why I like Amiga.org.