This is one of the basic, simple thing you can do to save your work in windows enviroment. But I am pretty sure noonw is using this function much.
Simply go to Start>All Programs> Accessories> System Tools> Backup
It iwll start the Backup Wizard and click "Next"
Select Backup Files and Settings
Then Select What you want to backup
Then Select where you want your backup to be saved. You can select a Network place as well. Then backup name and click "Next"
Click Advanced if you want to schedule the backup or select the backup type.
First Select the Type of backup you want to do
Normal - Backup selected files and Mark each file as backed up
Copy - Backup selected files, but does not mark as backed up.
Then Schedule it and test it whether it backs up properly or not by restoring it to another area.