Note that if you have a relatively new computer, a wired connection may be much faster. I got a new desktop last year, and initially I tried copying everything over via wireless, but after seeing that it was going to take several hours, I dug out my old ethernet cable and went that way. I was able to simply plug the cable into the laptop and the desktop without any other network hardware, since the ports were auto-sensing.
Gigabit ethernet was much, much faster for the transfer than the 54 Mbps on the wireless. What would have been six or seven hours on the wireless was under an hour.