Tom Raftery’s Social Media

Anyone know of any good resources for networking a Mac (running OS X) and a PC (running Vista) on a peer-to-peer lan network?

I’m asking because I have a 4.75gb file on my Vista machine which I want to transfer to the Mac and it is too big to burn to DVD.

I have turned on File Sharing for Windows on the Mac but although the two machines are on the same subnet (192.168.2.x), and both can ping the router (192.168.2.254) neither can ping the other!

I have tried both wireless and wired networks, to no avail!