CMS and subversion

I have a group of developers that are used to using CMS on VMS. I was
introducing them to subversion today, which I am admittedly fairly new
to myself, and they wanted to know about some functionality
differences.

In CMS they are used to reserving a copy in the repository for editing,
all this does is attach a tag to the file that such and such user has
reserved the file, it prevents nothing from occurring to the file. They
are a small group of developers and would like the ability to tell when
someone has last checked out, or reserved, a file and not committed it
yet so they could walk down the hall and talk to that person should
they need to make changes to that file also.

I feel this is a fairly awkward way to work, but they really like that
ability. After reading over most of the manual, I cannot see a clear
cut way to tell when a user last checked out something from the
repository. Is this possible?

Also is it possible to take a repository and see all changes made to it
in the last year? this might be useful for managers to see and general
reporting.

Thanks!

Shawn Plummer