It's all fairly easy really, when you examine the relevant connectors you'll notice that it is almost impossible to fit things in the wrong place. For the few parts where that's possible (memory in particular slots or front panel connectors for example) a quick scan of the motherboard manual should tell you what goes where.

You could start by taking your current pc apart. Just make sure you remove any securing screws and clips before removing a part and you should be ok. Then come back for the reassembly instructions.

Oh, and about the thread title, you will need a BIG bag of resources.