It's not hard to do, you just have to be careful. Earlier today I almost fried an old desktop. I was bored and overclocked it by 400 Mhz. When I returned it to normal, I forgot to change the voltage. Heh, that caught be off guard lol. Imagine the look on my face when I saw that the CPU temp was 98 degrees Celsius... It only ran for 5 seconds though
But yea, that's a nice machine.