I'd say:
1. TIME, and LOTS of it.
2. Ultimarc Arcade VGA card
3. A keyboard interface of some sort; pick your flavor: ipac, keywiz, hacked keyboard (!), whatever. In your case, I'd say J-pac.
3. A PC.
4. Software, which you will have to collect, configure, install, tweak, re-install, reload, troubleshoot, walk away from, try to forget out, fall in love with again, come back to, collect, configure, install, tweak......*rinse and repeat*