My brother just built a Windows 7 machine, and we are trying to connect it to his old Windows XP Pro machine via crossover cable to transfer over his files, but nothing I have tried has worked. I have them both in the same workgroup, I have followed all the guides I have been able to find online, and I still can't get the machines to recognize one another. What do I need to do? If someone could give me a walkthrough, I'd really appreciate it. This is my first time using Windows 7, so I'm not familiar with anything.