Okay mellamojimmy, so you are sure you have the firewire and USB front panel connectors plugged in correctly? You did it all according to the manual right?
Most of the time you can leave the wires you don't need disconnected. If you look in your manual (you can download it off the internet), it will tell you where all the front panel (start, restart, hdactivity etc.) go. The manual is your friend, read it like a dictionary and you should be able to build a computer easier than pie.
Anything you've gotten stuck on?