hello...so...I'm really tired of backing up my PCs (2) & the time it takes, by simply moving important folders to an external hard drive again & again...(or using a backup system, e.g.Paragon, etc.) I like the idea of using Microsoft's backup system (running XP Pro | 2002 | SP3)...in order that...the 1st time I backup it will of course take a long time...but each subsequent time it will only backup new or changed files.Questions:1) What is this method called & how is it accomplished...??? (as explained above, whereby subsequent backups are specific to new or changed files)2) If I revise a file...ANY file...& do not change the file name (for example...I open 'image1.JPG' in Photoshop...make a few changes to sharpen the image...& save it as the same name; 'image1.JPG')...will MS Backup detect the changes in that file & replace the old image1.JPG w/ the new one...??? i.e., how does MS Backup determine how a file is changed, so it knows to back it up...???thanks,doxology1 person needs an answerI do too

Hi doxology,Windows backup will add changed information to the subsequent backups. Refer the following document for more information about Windows Backup and Restore.Windows XP Professional Product Documentation - Backup overviewHope this helps.Thanks and Regards,Santosh Y – Microsoft SupportVisit our Microsoft Answers Feedback Forum and let us know what you think.

santosh...thanks,dox