No Problem, aufish.
BTW - the quick search I did, found one BIOS update here http://www.css.ap.sony.com/vaio/website/General/Model.aspx?Model=PCG-FR720#MyTopSearch as well as a few other downloads. I would only install this BIOS update if you have experienced issues with any USB 2.0 connections, otherwise do not worry about it. The other downloads are to address specific issues as well, so only use those if they apply to your circumstances.
The other bit of information I found indicates that your machine can accommodate up to 100 GB hard drive, according to the drives offered and listed compatibility here http://www.getpartsonline.com/sony-vaio-fr.html
The 100 GB would be make sense, based on the current large drives available for laptop/notebook computers (100 - 120 GB). I would recommend going with an 80 GB 7200 RPM model if you can get one where you are. I just installed a Seagate Momentus 80 GB 7200 RPM drive in my Dell notebook, and the performance over the previous 40 GB 5400 RPM drive is significant (as well as the space).
Now that I am back in Internet Explorer, I am hoping this post will retain it's spacing.
Good luck.