I occasionally need to move files between my PC and PowerBook and the method used depends on how much needs to be moved. These are the options that I tend to use:
1. 1GB or less = USB Flash Memory Stick
2. 1GB to 5GB = Network connection over home wireless network
3. > 5GB = Direct wired network connection
Given the current thread of conversation has put you on the track of a direct network cable connection, this is how I achieve the job and it works really well.
1. Connect the two computers together using a cross-over network cable (a standard network cable will not, as far as I am aware, work)
2. Ensure that the Folder that contains the files in Windows that you wish to transfer is Shared. Make a note of the Share Name for the folder you assigned (e.g. myDocuments).
3. Change the network settings of both PC and Mac so that they each have a different IP Address (e.g. Mac = 192.167.0.1 and PC = 192.167.0.2), the Gateway is set to the IP Address of the other computer (e.g. Mac = 192.167.0.2 and PC = 192.167.0.1) and the Subnet for both Mac and PC is set to 255.255.255.0. Once these settings are saved the two computers can talk to each other.
4. On the Mac in Finder, select Go > Connect to Server > and enter the IP Address and Share Name of the shared folder on the PC (e.g. continuing from my earlier example "smb://192.167.0.2/myDocuments").
5. When the prompt appears, enter the username and password for your PC.
6. The Mac should now mount the Shared Folder and you should be able to copy files at your leisure.
One word of warning with the above, make sure that either the Windows Firewall (if you are using Windows XP) is either disabled or is set to allow connections from the Mac's assigned IP Address (e.g. 192.167.0.1) on TCP port 445 (called "File and Printer Sharing" in the Windows Firewall Exceptions tab). Disabling for the transfer is probably the simplest option...
This should enable you to connect at really fast speeds which makes a big difference if you have a lot of files to copy (e.g. a music collection). However, if you don't have much to copy then this may be more trouble than it is worth so, if you have the options, consider getting a cheap USB memory stick, burning a CD or DVD, or (if you already have one) connecting across a home network.
Anyway, hope all that is of some use...