I'll be giving you instructions as I see it in ver9(my current version) then try to convert it in 10.
Go to Tools>Setup>System>Activity Tracking. In Activity Tracking Setup window, change the Activity Type to File Tracking. If everything in the Activity grid was marked for all or even certain users you want to track then you're ok, if not, this is the best time to change the setup.
Now the report to show the activities(creation, modification,deletion) in your system:
Go to Reports>System>General, it'll ask you the GP password. Look for Activity Tracking Detail. Use this to get your report. This is assuming in the Activity grid, your requirements were marked already.
Goodluck,
Duke