lots of users of WinXp have experienced problem in sharing files and folders over our complex network whether or not easy file sharing is enabled. The approach that I have found to work systematically is:

1. Disable simple file sharing from My Computer-Tools menu - Folder Options - View tab - Advanced Settings

2. Open Control Panel - Administrative Tools - Services. Not able the Server service by making start up Automatic This is a standard service needed for sharing files and folders under WinXp.

3. Open Control Panel - Administrative Tools -Computer Management. Scroll to System Tools - Shared Folders - Shares. From Action menu, select 'Add share' and follow the directions.

4. You want to add users to Administrator or other groups for shared folder access. Under Computer Management, scroll to Local Users and Groups. To add user to Administrator group,choose the group name and select Add from Action menu.