BANGALORE, INDIA: We often come across a situation wherein we need the previous versions of a document, for instance, an article, for we have overwritten or deleted some portion of it.

Windows Vista offers a feature which enables us to do the job. In Windows Vista Business, Enterprise and Ultimate, there is an option called 'Restore Previous Versions'.

Whenever a system restore point is created, shadow copies of your files are also created alongwith it. But your machine must be enabled to create system restore point.

Hence, you can see multiple shadow copies of your files if the file is old enough. Here we show you in detail how to create shadow copies of your files and retrieve it.

Your machine must be enabled to 'create system restore point', else you won't be able to retrieve the earlier versions of a file	Right click on the file you want to restore to a previous version and select 'Restore Previous Versions' option. This will create the shadow copies of your file

You may find various versions of the selected file, select the appropriate version of the file and click on 'Restore'. This overwrites the current version of the file	Vista provides other options also, you can copy the previous content to the current version of the file or you can save a separate copy of the previous version