Remove the disk drive put it in a USB enclosure After the data is saved off replace the disk drive backWorst case scenario to recover the data only.
and mount it on a Linux or Unix© machine to recover the data.
into the Windows machine and reformat and reload the op/sys.
Whoa, hold the screwdriver! You don't need to do all that. Download, burn and boot from a Ubuntu Linux LiveCD and boom, you're on a Linux machine. No cracking the case open or purchase of a usb case enclosure required.
Choose the first option to run Ubuntu without installing (or some wording like that...) Once the shell comes up you can access the hard drive through the Places menu, plug in your usb key and copy over your important files. When you're done, right click the usb drive icon on your desktop and choose Unmount, Eject or Safely Remove (doesn't matter which) before you remove the usb key to make sure its done copying files.
Hardest part of the whole operation is figuring out how to burn an iso CD image if you're running Windows XP.
advice I may have to use...