To see and shared Windows XP file, go to System/Preferences and select Network Connections.
On Network Connections, at Wired menu click Add, go to IPv4 Setting select Shared to other computers. Apply.
Your connection exist. Confirm it connect 'now'.
Go to Places and select Network.
Open Windows Network.
Open Workgroup. Example is MSHOME.
Windows XP PC appeared. Open example, MEORBU.
Sharing file or folder exist and you can copy or paste it.
It is not a reason now for you to install Sabily in your machine while others still stick to Windows, because you still can share your and their file on the network.