Configure each side for TCP/IP as follows:

Computer A:
IP address = 192.168.1.1
Subnet mask: 255.255.255.0

Computer B:
IP address = 192.168.1.2
Subnet mask: 255.255.255.0

Make sure each computer is using the same workgroup name. Enable sharing as necessary (obviously the side you need to retrieve files from needs to share its files/folders). Connect to those shares so you can copy/paste the files/folders.

For example, computer A wants to access files shared by computer B using a share named “myshare”, so go to a command prompt and type:

net use * \\192.168.1.2\myshare

Computer A will now have the next available drive letter assigned to that share, and from which those files can be accessed.