I learned the hard way that backing up is vital to a stress free life. I now backup my PC in an image file to an external HDD using Acronis True Image 10, which is great. I also backup My Docs to DVD RWs which I keep offsite in case of fire or burglary. This may be a belt and braces (or suspenders if you're from U.S.) but I've been caught with my pants down too often.

In spite of this I still have a nagging doubt! Some days I edit some files fairly extensively between major backups. I'd like to backup these files as effortlessly as possible to a USB drive between the major backups.

I've looked at Windows Backup but can't see if I can set it to backup only files changed since the last backup. I'd appreciate some advice on this. Is it possible, and if so, how?

What I'd like to be able to do is to just insert the USB drive, click a button and have any changed files automatically backed up to the USB drive without me having to decide which files they are by looking at dates/times etc. In the old DOS days this was fairly easy (with X Copy I think it was), but time has marched on and left me far behind!

Any pearls of wisdom will be much appreciated. Thanks.