Samba if you want to share drives, but you can share your internet connection through the xp pro machine as well.
How is your xp machine connecting to the internet ?
Dial up
Ethernet to Broadband
USB to Broadband
Or some routing device ?
If it Ethernet to broadband or ethernet to a router you want a second network card or plug your amiga into the router.
If its the first then, on the network card thats spare in the pc plug in a "cross over" cable to the network card in the amiga.
Enable internet sharing option in xp for the this network interface.
Run Miami Init again on the Amiga.
You can now also ftp files between the machines if you want.
