if its a normal a1200 case.. you can take out the metal sheilding put paper or other stuff over the mobo and put a 3.5" hd in there and the keybaord ribbon fits nicely over the top and round the side of the hd into the interface.
so you may not need to extend your keybaord ribbon.
I have an A1200 with 30gb 3'5" hd and slim samsung cd-rw modded on the left side at the back/top.
I used a 2.5" to 2x 3.5" cable of ebay and a little 3.5" to slim cd pcb adapter and idefix97
the A500 keyboard and the A1200 keyboard are identical silouets of eachother the difference is that there is a onboard controller and leds on the 500 one and the 1200 hasent plus there is a mysterious blank key next to the left shift key on the 1200 but this doesnt matter an 1200 keyboard will fit perfectly in an a500 case, but the only problem it the back of the case and wires but there would be enough space for other cool things.
