You're wanting to share the files on the PC to the laptops, correct? Once you have your wireless router setup and the notebooks connecting to it, just right click on the folder you want to share and then click "Share Folder".
Select Windows Networks (SMB), name it as needed (e.g. files), and decide if you want people to be able to change/write to your share.
You need two pieces of information here: the name of your box and the share name. You just decided the share name (e.g. files), so that should be easy.
Go to the terminal and type hostname. Let's say it is desktopbox.
Go to your Windows PC and click on My Computer. In the address bar, type \\desktopbox\files . You should be set!
I generally don't use salutation, valedication, or please when answering your questions. I'm not a jerk; you have a question, I have a possible solution.