tryhttp://www.nirsoft.net/utils/chromepass.html
or http://www.favbrowser.com/backup/
or manually backup
To save (or export) BOOKMARKS and PASSWORDS:
1) Go to the Start menu > Run.
2) Enter one of the following directories in the text field, then press OK.
>>Windows XP: %USERPROFILE%\Local Settings\Application Data\Google\Chrome\User Data
>>Windows Vista: %USERPROFILE%\AppData\Local\Google\Chrome\User Data
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Default Location
Windows XP
Google Chrome: C:\Documents and Settings\\Local Settings\Application Data\Google\Chrome\User Data\Default
Chromium: C:\Documents and Settings\\Local Settings\Application Data\Chromium\User Data\Default
Windows 7 or Vista
Google Chrome: C:\Users\\AppData\Local\Google\Chrome\User Data\Default
Chromium: C:\Users\\AppData\Local\Chromium\User Data\Default
3) Locate and open the folder called “Default” in the directory window that opens.
4) TO COPY BOOKMARKS: Copy the file named “Bookmarks”, and save it for backup.
5) TO COPY PASSWORDS: Copy the file named “Login Data”, and save it for backup.
6) Once you have formatted the drive or created a new profile, follow steps 1-3 and simply paste the files saved in steps 4 & 5.
7) All your bookmark data and password data are back!
To create a new browser user profile if your Chrome keeps crashing follow instructions in this link: http://www.google.com/support/chrome/bin/answer.py?answer=142059
