As for the LEDs and stuff, its the same spot the power/reset switch are plugged in. Theres a spot in the lower right hand corner of the mobo that has four 2 pin inputs color coded like this:
grey | red
Those will be the LED and power/reset inputs.
As for USB, youll need to look in your mobo manual.
As for front sound, if you have a sound card, you cant hook em up (without a lot of work). If youre running onboard sound there may be a spot for em. Itll be in the manual.
System specs? Lets just get down to it people:
My penis is bigger than yours.