I have a question about power connectors. Take a look at my motherboard, if you will:
Yes, I'm afraid you do. Without that power connector being connected there won't be enough power to the chipset and slots, etc. on your motherboard. I appreciate that you're not in the UK, but take a look at the adapter that's on the following page. You can purchase one of these that will convert a normal 4-pin molex connector to the 8-pin connector that you need.