All you need is your computer, running Windows Vista (Home Premium Edition or higher, Home Basic sucks - don't use it), a USB external hard drive, a connector cable, a cup of coffee and a few minutes. I recommend a 500 GB USB external drive, which typically run between $50 and $80.
- Click on the Start button and click on "All Programs"
- Click on "Accessories" to expand the items within that
- Under Accessories, click on "System Tools"
- Click on "Backup Status and Configuration"
- Click on "Set up automatic file backup"
- Click on the drop-down bar under "On a Hard disk, CD or DVD" and select the drive letter for your attached external hard drive. Click Next
- On the "Which disks do you want to include in the backup?" page, de-select all drives except for your C: drive. (note: ignore the warning message). Click Next.
- On the "Which file types do you want to back up?" page, de-select all file types except for "Pictures". Click Next
- On the "How often do you want to create a backup?" page, Select an appropriate backup schedule. Click "Save Settings and Start a Backup" to begin the first backup.
From this point on, each time this backup job runs, it will only backup files which are added or modified since the previous backup.