Organize Uploads By Day?

Hello…

Is there a way to organize uploads by day, month and year. Or would it be an easy change to make in the php code? If so, where?

We’re implementing WordPress as an intranet message board for a client to communicate with their shops. As part of this they need to upload a word file, with the same filename – “WeeklyBulletin.doc” – more than once a month and we’d obviously like to keep them all separate.

Is there any way to do this?

Cheers

James