you can use easy the winscp.
Connect your MS on the network and then ping for find the IP addres get from your router under DHCP, like: 192.168.1.105 ( not sure that wil be the 105, depend on your router)
the run the winscp:
Host name: 192.168.1.105
port number: 22( is on default)
Press login and you will see the whole MS hard disk.
Now you can start to share/copy/delete files like a normally windows PC.
IF you have one open forward port on your router, you can give also your router IP addres: http://www.whatismyip.com/
open it and wil display your home IP ISP adress.
give this IP to another friend/Ms user and can also login direct on your MS too.
I use this system for fix the files from other MS custumers.