Windows 7: Problem sharing subfolders

I made a work group between 1 window seven PC and 2 window XP PC.
In Window7 PC I shared folders and can see them in the 2 window XP all files and subfolders that are already in the folders before were shared. But all the files and subfolders that add after were shared I can't see.

I found the subfolders that add after the shared folder was created were not shared and if I shared the subfolder I can see; but with the files nothing.

My question is; How can I see all files and subfolders added to the shared folder after created?

You need to go into the advanced security permissions for that and then use the check box to Include inheritable permissions from the objects parent box, and click on Apply.

The tutorial in the link shows the steps required for this.
Permissions - Allow or Deny Users and Groups