i dont think tune-up has this

not sure !
to manually do it :
Click Start > Run > regedit > OK.
The Registry Editor opens.
Scroll to My Comp at the top of the left pane.
Click "File" and then click "Export".
Choose the location and the click save.
to restore simply double-click the backup file.
else search for a freeware here
*www.techsupportalert.com/best_46_free_utilities.htm
*www.techsupportalert.com/more/extended.htm#78
*www.econsultant.com/i-want-freeware-utilities/
*www.majorgeeks.com/page.php?id=20