To enable Folder sharing follow the below steps
Computer should be in the same Workgroup name
Step 1: Click start, Win 8 menu will appear
Step 2: Enter computer on the Search field and press [Enter] key.
Step 3: Right-click on Computer and select Properties.
Step 4: Select Change advanced system settings.
Step 5: Select Computer Name and click Change button.
Step 6: Enter a Computer name and should be your WORKGROUP for ex:(myhome, sales etc)name then click OK.
Step 7: You will be prompted to restart your computer for the changes to take effect. Click OK
Allowing Computer discovery over network
Step 1: Click Start -> Control Panel or Left Click Nework Icon in system tray tab (where you will check time and date option) -> click open network sharing center
Step 2: Network Sharing Center window opens -> on left hand side click change advance sharing setting.
Step 3: click on for : Network Discovery, File and Printer Sharing
Step 4: Click off for : Password Protected Sharing
Allowing Simple File Sharing Option
Step 1: Open My Computer -> on top menu clikc organize -> click on folder option or Press ALT key Menu bar appears click on tool -> folder option
Step 2: Folder Option Window appears -> click second tab (View Tab) -> scroll down unless you find Use Sharing Wizard this is should clicked.
and now you are good to go to share your folder between Windows 8 computer…..
for Windows XP / Windows 7 support please refer my Post