To exclude file types from a backup
The Backup Utility Wizard starts by default, unless it is disabled.
Click the Advanced Mode button in the Backup Utility Wizard.
Click the Tools menu, then click Options.
On the Exclude Files tab, do one of the following:
Click Add new under the Files excluded for all users list if you want to exclude files that are owned by all users.
Click Add new under the Files excluded for user list if you want to exclude only files that you own.
In the Add Excluded Files dialog box, do one of the following:
If you want to exclude a registered file type, click the file type in Registered file type.
If you want to exclude a custom file type, enter a period and then the one, two, or three letter file extension in Custom file mask.
Type a path in Applies to path if you want to restrict the excluded file type to a specific folder or hard disk drive, and then click OK.
To start Backup, click Start, point to All Programs, point to Accessories, point to System Tools, and then click Backup.
If you restrict excluded files to a specific path (folder), the files will be restricted from all subfolders of that path unless you clear the Applies to all subfolders check box.
You can change how a file is excluded from a backup set by clicking the file in Files excluded for all users or Files excluded for user, and then clicking Edit. The Add Excluded Files dialog box should appear.