Can't you make your Mac visible to the Windows machine by creating a computer to computer network on the Mac via your Airport Wireless. There is a Create Network option. Select it, name your network (e.g. Rudy), select Automatic Channell 11.
If you want, you can open options within there and secure the network. Else, just close.
Now go to the Windows machine and search for your wireless network called Rudy.
I only read the review (I have never tried it) but for anyone interested in transferring large files (e.g. up to 1 Gigabyte) from one email account to another, they may want to try Pando Software.
From Pando website regarding advantages:
"Pando has several advantages over setting up a home FTP. Here are a few:
1) Because you upload your files to the Pando Network (for a period of 14 days from the last time the files are sent) you don't need to be online for your recipients to get the files.
2) The more people who download your files the faster it becomes for the recipients who download them later.
3) Security. Because Pando uses the latest security protocols you don't have to worry about someone hacking into your home FTP server and getting at more files than you intended for someone to get."
It is free. It runs on Mac and Windows. It uses BitTorrent, not FTP.
See
http://www.pando.com/beta/becomebeta
see forum
http://www.pando.com/phpbb/
see
http://www.pando.com/beta/what
Here is Walter Mossberg's (Wallstreet Journal tech editor) summary of it. July 12, 2006
"If you're tired of bounced emails, and of using Web sites to share your personal videos or photos, Pando is a straightforward solution that anyone can understand in a matter of minutes. It's a great solution to a vexing problem."