u can use SPB Backup application to take Backup.
it has option for Complete and Custom backup.
really very good software for backup.
when u have ur PPC in very good configuration, take a full back up of it, after Factory setting u need not to install same program again,,jut click on the Backup file, it will install itself, and will restore ur all application(with register Key[if any])/contact/sms etc.
hope this rely help u.
u can download this application from SPB software site, and Key code for the same is: 36246788
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