Use either SubStr() or Split().

A simple example:
code:
$sLine="Backup Completed:  Sucessfully"
 
If Left($sLine,17)="Backup Completed:"
   $sBackupStatus=SubStr($sLine,20)
EndIf
Notes:
1) Is the status really mis-spelled?
2) You will need to change the length for the Left() (the "17") and the start position of the SubStr() (the "20") to fit depending on the actual data returned.