my project starts mid september and ends mid march. i want to see, what will be the overall % complete at the end of the year, as of december 31. how can i do that?

i dont have any resources assigned.. everything is entered in duration only and i update it by updating percent complete when i do updates.

Use the Update Project command and set the status date of 31 December. Do NOT save changes.

thanks, it is good way... is there any other way to do this? just for learning, otherwise this works well

i checked the task usage view and couldnt see how else it can be done.

the only way i could think of was - (and i thought of it because a cumulative cost field exist in tas view), i entered durations in terms of cost , such as, if it is 7 day duration i entered $7 - just for the sake of seeing it , and not assigning any cost ofg course, i was just doing it by means of cost fields. i had no costs assigned in my project yet anyway.

then i pasted the date range and cumulative cost (duration) to excel... and made a graph. the results were almost the same.

I don't follow your question "is there any other way to do this". Do what?

The Task Usage view shows you tasks and assignments. If you don't have resources, you don't have assignments.

If you want costs, you'll either need to:

Create resources with costs and assign them.
Use Cost resources
Use Fixed Costs

Project will not suddenly apply costs and there will be no data in the cumulative cost field.

to show percent complete in a way other than you told before... is there?

ok i was just trying to describe another way i did to do that, please ignore that part...

Percent complete is a duration measurement. Percent work complete is a work measurement - as you don't have resources assigned this won't work. You can use Physical % complete but that requires:
1) pre-planning or the summary tasks will not update.
2) manual entry for each task. The update project command will not change physical % complete.