I'm glad all is going well for you.
I remember back to when I built my first system. There is always going to be that moment of complete worry as you turn on the switch for the first time hoping nothing goes wrong.
You've past that and are now on your way so
to you.
Windows is a breeze to set up. Just stick in the Cd, reboot and follow instructions to format drives, install, etc.
Then tonight, sit back, get yourself a drink, and enjoy what you yourself have achieved.