I am trying to setup Microsoft project server 2003 as our scheduling tool for the internal employee.

I am trying to achieve some of below questions in project to automate our scheduling look more practical and nicer and management can get overall project idea of every task going in the company sort of master project.
 
"      Partial or unassigned tasks to more than one employee/resource without altering the duration of the task (i.e. CSI verification 80 hours of assorted tasks, only allocating resources to 10 hours of those tasks, 70 hours remaining or Kubota at 8 hours to John for 5 hours and Joe to 3 hours)  
 
o      How can I setup above with multiple tasks ?
 
"      Parallel or tandem jobs in which a task starts soon after the start of another task (i.e. printing 100 of 500 books, trimming in bindery begins with the first 100).  Without identifying the same task as a different name.
 
o        How can I set one task to achieve above?
 
"      Given the structure of project in which each project is treated separately, an alert system which tells you that an employee/resource has been over allocated before the tasks have been finalized or at the time the work is assigned to the employee/resource.
 
o        i.e. John is scheduled in Project A from 8AM  8:15AM, and also scheduled in Project B from 8AM - 10AM (Again the possible solution was to enter specific times  10AM, 8AM, etc.)
 
o        or John is scheduled for 5 hours in Project A and 4 hours in Project B on the same day and is 2 hours over the available 7 hours in a work day (assuming in the scenario that the due dates are for the same days and the priority levels are the same) How will Project notify of this conflict?
 
 
"      A window or view that shows the employee/resource and the date they were allocated (current window shows accumulative tasks) a sort of view that gives overall idea of every resources that are in the company and project or task they are working on with gannt chart so that we can easily identify who is empty.
 
"      View of schedule for the day, per department or all, displaying who is working on what and when (or without specific times) for how long
 
"      And if any task or project is delayed for resources or interrupted how can I make changes to overall schedule to reflect new timelines in few minutes so resources dont waste time.

On top if some one can recommend an easy most powerful scheduling tool besides MS project 2003 will be great or can recommend me project 2003 or 2007 differences and goods and bads.