Personally I'd give up now. Why?
1) They take up a lot of desk space and are usually a little banged up looking.
2) They are old, so chances are higher that they will stop working sooner than new tech.
3) The price you'll pay for an old one is probably higher than a new one.
4) If you want to expand later (like with a TIPI), you'll have to get a new one anyway.
So... why waste your money on an old one? Keep your future expansion options open, buy the Jedimatt42 version from arcade shopper
<< BY CLICKING HERE >> and save the time and the hassle of trying to find an old clunky beater.