I'd read this as well if I was you, as this has might help you in the future
bbspot - appease the hardware gods...
Nahh seriously. Read the manuals and check the diagrams etc, thats usually a good pointer and if your like any male you usually do this LAST after every other avenue is exhausted
The other links are a good guide as well and a little word from experience, if things go wrong in anyway - take a deep breath and slowly work on it, I bet everyone has bust at least 1 item due to being stressed and rushing with excitement