More than likely the machine needs a propriatory psu, if thats the case, forget about getting the existing mobo up and running, you may even have trouble with the power switch on a new mobo. Getting the CPU out should be pretty simple, remove the heatsink and lift the little level next to the socket, if that doesn't work, the CPU itself may be glued in (a little trick big manufacturers used to use to discourage upgrades). As for the RAM, unless the board supports EDO, you can't use it, even though the RAM may look the same its not. Your best bet would be to abandon this little bundle of headaches and look for another freebie.