Is it possible to play Amiga games on a PC with Windows OS, and is it also possible to connect an Amiga type joystick to PC and play the games with it?
Get WinUAE, an Amiga emulator for windows.
The Amiga Joystick can be adapted to the PC paralell (printer) port with some fancy wiring, but getting it to be a "real" windows joystick is going to be a challenge. You would probably have to write a device driver to replace the default parallel port driver.
I have heard rumors that Atari Age used to offer an adapter that would work, but it looks like it is discontinued.