Philip: The memory upgrade was a very long and tricky process but I used these really excellent instructions http://www.reghardware.co.uk/2009/02/19/aa1_memory_upgrade/ and it was painless. I ordered the battery from http://www.battery-locator.com but it took literally a month to arrive although they did reply to my emails when I queried it ... not sure I would do business with them again though. Let me know if you do upgrade, and good luck :)