How to create a Board aka Forum on your own PC , first of all you need Apache Server, PHP, MySQL and a Forum Script i.e. phpBB or Invision or vBulletin.

Download phpDev here and you get a bundle of all the things above.....
Extract & install php dev. start the apache server,its 90% done.

upload the forum script to X:/phpdev/www/public

(x is your drive, usually C: )

Now to access the forum through internet you will not know your IP address thru ipconfig command click here. see whats your IP address.

now go to

http://your ip address/public/your forum directory/install.php

thats it!