I think DKB made a adapter for the 2000kbd--->A1000 ,in the case of a A4000 kbd you would need the dkb and a ps2 adapter,but finding these a1000 adapters is probabaly near impossible. the good news is the A4000 kbd will work fine on the 1000 is you don't mind a bit of soldering/rewiring. the pinouts are online.
mike
