Here's another great freebie from Giveaway of the Day: Paragon Drive Backup 9.0 Personal. It's a drive-imaging program similar to Acronis True Image, and today only you can pick it up for nada.
Let me repeat that: today only (Wednesday, April 8). As you might guess from its name, Giveaway of the Day is a site that offers a different commercial program each day of the week. When the clock strikes midnight tonight, Paragon Drive Backup goes back to costing $39.95.
CNET hasn't reviewed the program, but there's a good overview at PC World. In addition to imaging your entire hard drive, Paragon Drive Backup can back up individual files and folders. Get the full feature rundown from Paragon's site.
I've used a program similar to this for years, cloning my primary hard drive to a secondary drive. That way, if the main drive croaks, I can just swap in the spare and get back to work.
Paragon Drive Backup 9.0 requires Windows 2000, XP, or Vista. It's a 241MB download.
Remember: today only. Grab this $40 app free of charge before it's too late, and start making full-system backups like you know you should.