I just got my g3 powerbook pismo 500 mhz processor rebuilt.. did it myself. right now it has 384 mb of memory installed, id like to upgrade it to more than 512 but i only see one ram slot. does anyone know if theres more than one ram slot or am i going to be stuck with 512mb of ram. its running tiger 10.4.11 ok not too badly actually but think it would be much better with more ram. as it is it works much better than my ibm windows laptop running windows xp, nothing wrong with the ibm laptop just windows is kinda sucky would love to put tiger on it.