Yes it's possible and yes, it's easy.

The first question must be do you want to use it as an external hard drive or are you prepared to open up your PC and put it in there? If you choose the second option it will cost you nothing as you won't need any extra cables or power supplies.

If you want it to be external you will need a 'caddy' to hold it and they normally come with an external power supply. You will also need to plug it into a port on your PC. The fastest ports are Firewire, followed by USB2.0. A USB1.0 port really isn't fast enough for high speed data transfer between hard disk and PC.