CSV File to Hard Drive

I swear blind I have done a tutorial that allows you to write a .csv file directly to your hard drive, but sadly I can't find it. I normally record data directly onto an sd card, but it would be easier when I'm at the computer to directly record to the hard drive. Is this possible?

RealTerm does this. It is a freebie. Needless to say, you need to format the output from the Arduino.