The only things you will need are:
1. for the two computers to be in the same IP address range. (if one of the computers is connected to the Internet via Wireless or some other method not involving the Ethernet card, you can enable Internet Sharing, then both computers will MOST DEFINITELY have addresses within the same range. If that isn't the case, you must set both ethernet adapters to "obtain an IP address automatically", when neither of them is able to do it, they will revert to an ip address that starts with 169, then you'll have no trouble at all).
2. To know one of the computer's network name. (Right-click my computer, go to properties, then go to Computer Name, and there you'll find "Full Computer Name").
3. to have a shared folder with read access to "pull" the files from it. (right-click a folder or your HDD icon, go to properties, then to Sharing). You will want to disable the share after you finished transferring your files.
how do i transfer files from my old computer to the new computer with a crossover cable? Even with the cable, do you still need some kind of software?