Advance Settings is like follows
This PC has 2 Network adapters one for internet the other for a separated network with a windows 2000 server, previously was able to connect to other pc and this server but for reasons I don't understand File and Printer Sharing wont respond to the Turn On switch as I explain bellow.
Network Discovery is Turn On
File and Printer Sharing (This one is Turn Off no matter how many times I turn it On keeps turning off right after a press Save Changes)
Public Folder Sharing is Turn Off
File Sharing for Devices that Use 46 and 56 bit Encryption this one is Enable
Password Protected Sharing is Turn Off