If it's this you're talking about..

http://www.vaio.net/sonyvaio689.html

... then it depends what you want to do.
It looks like it's just a basic recorder for doing a few simple things like burning CD's or recording your old cassette tapes. There's probably some basic built in features for improving on the end sound, but nothing major. You can use it to record guitar to the computer but just in it's basic form. ie, using a mic or plugged in directly or through an effects box.

If you really want to get into recording stuff you need something more substantial that can do multitracking and use VST effects and things like amp modelers.
ie, ProTools, SONAR, Cubase, or Logic Pro.