Hi Barbara,
From my understanding your users use the 2007 timesheet to enter actual
time. If you would like to update your Project tasks with the timesheet data,
then you will need to ensure that all users update their timesheet on a task
by task level. Once you have achieved this, your users can import timesheet
data into the Project tasks. this can be done in the "My task" screen.
Once your uses have opened teh "My tasks" screen they will find a button
called "import timesheet". This functionality allows users to import the time
entered in the timesheet into the tasks.
Once this action is completed, your users can maintain "remaining work" if
required and then submit the task to the PM. This is generally ( on a high
level) the process that needs to occur in order to update your Project with
your timesheet data.
PS: you can also update your tasksk in "My tasks" and import this data into
your timesheet.
It all sounds a bit complicated, and to be honest I think it is, btut this
is the current out of the box functionality of Project Server 2007 timesheet
and task update.
Hope this helps