How to backup your Google Chrome profile
One of the nice things about the Google Chrome web browser is that all you need to do to backup your profile information is locate the folder where your user data is located and copy the data. If you're using Windows XP, that directory is probably in the Documents and Settings\username\Local Settings\Application Data\Google\Chrome\User Data folder.
But if you're looking for a simpler solution, you might want to check out
Google Chrome Backup, a free utility that lets you create, backup, and restore profiles.
Backing up a profile works the way you would expect it to. Google Chrome Backup will attempt to locate your existing profile and all you have to do is right click on it and select backup and choose a destination directory. A much cooler feature is the ability to create new profiles. Just click the new profile button and you can create a new profile with separate settings and browser history. You can later choose between profiles by launching Google Chrome Backup and selecting your profile from the application.
ref:
http://www.downloadsquad.com/2008/09/15/how-to-backup-your-google-chrome-profile/
