i don't know about pennies but if you look at the processor you will see a bunch of open solder joints for memory usually on the top left of the board you will notice the bank of chips they are all the same they are your memory chips 256k chips maybe take the number off the chip and do a web search you will usually come up with a hit a did it not too long ago for a quote and the chips were readily available but i decided against the job because of magnifying glass and real close solder didn't want to chance recking the board and if i did i would be buying a new one upwards of $2500.00