Time from File Attributes or EDITTIME

How can I extract the total time from each DWG file?

I've got a directory of files, that I would like the Total Editing
Time to be extracted to a spreadsheet, with file name, directory and
the time, or more variables at will.

Is there a program for this? Or can some provide a link?

We are aware of TIME and EDITTIME, and it works well.  But we've got
to process all the files, and log it.  Using 2008.

Thanks
samurai.