Your 2008 unibody MacBook might be a year old now, and in dire need of more memory. Fortunately, these models can use up to 4GB of the stuff, so we got hold of some to walk you through the simple upgrade process.
Fear not: it won't void your warranty or your AppleCare, as long as you don't break something while you're inside the machine.
We're using RAM from Corsair, which we highly recommend. The 4GB kit comprises two sticks of RAM, each with 2GB of memory. The model number is VSA4GSDSKIT1066 (memorable, right?), and works in the 2008 unibody MacBooks, and also the current MacBook Pro models.
Incidentally, if you want to shop for your own RAM, look for 204-pin SODIMM DDR3 PC3-8500 SDRAM running at 1,066MHz.
In addition to the memory itself, you'll need a mini Philips screwdriver, something to store some screws in for a while, 15 minutes of spare time and probably a coffee.
Got all that? Good, then let's get on with it.