Right, your laptop can be upgraded to have 2x4gb 1066mhz (MUST BE 1066mhz) LAPTOP memory not your average desktop PC memory. For example...
http://www.ebay.co.uk/itm/Hynix-8GB-2x4GB-DDR3-1066MHz-PC3-8500-PC8500-Non-ECC-204-pin-Laptop-Memory-RAM-/351467782315?hash=item51d51cc0ab
(Obviously shop...