who said it was hard? its straight forward and easy. All the wires already come with your parts, sata, ide cables will come with your motherboard, and obviously the power supply will be connected with the cables already. Thermal paste should already be applied onto the heatsink, but people here will recommend that you buy AS5 or something like it to use instead of the stuff provided with the heatsink.
You may need to look at the mobo manual just to see where all the wires from the case will go, such as power button, light, speaker, etc.
"Is virtue a thing remote? I wish to be virtuous, and lo! Virtue is at hand." -Confucius