Backup Utility within Windows XP pro

[Sheldon]

I am trying to use the schedule function of Windows XP to
have the system due an automated weekly backup. I have
been using this utility for the past 4 months successfully
by manually starting it. I have tried to get the utility
to run on a schedule automatically but what seems to be
happening is if the computer happens to be on at the exact
time the backup is scheduled, then it works. If the
computer is off, I expected that the next time I log in
the backup would be performed as the scheduled time would
have already passed. This does not seem to be the case.
If the computer was off at the time of the scheduled
backup, the backup utility just seems to ignore that
backup attempt altogether! Can someone please let me know
how to due a weekly backup(normal of differential) by
scheduling, so that if the machine happened to be turned
off, the backup would still take place next time the
machine is turned on. I have tried picking the backup at
login, or backup at startup option, but that only works if
you want it to run everytime you startup the machine; not
if you wanted to run the utility once per week???

 

[Nictu]

Ntbackup in xp doesnt support what you want it to do.

 

[Sheldon]

If it doesn't, it comes very close. I can set it up for
once a week backup, but on the time of the backup, the
computer must be on! Do you know why this is? Why if it
misses the time, does it not just continue on the next
boot up cycle?