well done, we look forward to being able to help you (if you need it, & if we can).
the feeling when you do your first build, turn it on with fingers crossed and it works IS GREAT.
if it doesnt work, don't get angry, just go back to the start and try again.
My little bit of advice is to start with the basic system, M/B, proc & fan, memory, 1 hard drive, 1 cd rom, floppy drive & graphic card. add the rest later once the system is working and windows is installed.
good luck with your project.