Lenovo included a convenient access panel on the back of the laptop, so all you need to do is remove a few screws to pop out your hard drive or RAM and slap in a bigger, better model. But if you want more specific instructions, check out these two tutorials from Laptop Magazine:
Oh, and if that’s not enough for you, those crazy Laptop kids decided that while the access panel was open, they might as well throw an Intel X25-M solid state disk in there to see how the computer performs. Not surprisingly, if you replace the hard drive from a $450 computer with a $650, state of the art solid state disk, you get a performance boost. The battery lasted longer, the read and write speeds were faster, and Windows booted up more than 10 seconds faster. But for $650, it’s still totally not worth upgrading unless you’ve got a lot of money burning a hole in your pocket.