pull the hard drive from the old computer and install it in the new computer as a slave and then just drag and drop everything from the old hd to the new hd. then if you aren't going to use the old computer anymore, format the old hard drive and use it as extra storage in the new computer.
however....cd's are a good option and are cheap these days. they are good because you then have a permanent copy of all your files that you can keep, in case something happens like your hard drive crashes.