yes KOS, computer-based recording systems can record from microphones...if you plan to use a sound-card to convert your mic-signal (or pretty much any other signal) to digital, be sure to get one that has quality analog to digital converters...take the time to compare the signal-to-noise ratios among various sound-cards--the higher values here are quieter...if you want to be able to listen to a previously recorded part while recording, get a full-duplex sound-card...there are dozens of ways to get your signal digitized and neatly tucked away onto your hard-drive...you need to study up on the whole computer-based recording process in order to know what hardware and software will suit your needs...soundcards aside, you will find that there are other external devices which can digitize your signals and send them straight to your hard-drive...they aren't exactly cheap, but, they perform quite well and allow you to have more than just one or two inputs, among other things.