Is there a batch tool to convert recent dwg to older dwg versions?

Hello,

I need to change number of 2010 dwg files to 2000-2002 dwg format. Currently i do this one file at a time through DraftSight by saving the file in 2000-2002 format. But it becomes difficult when the number of files increases.

Is there any batch tool/script to automate this process - to convert all the files in the source folder to a destination folder?

Does DraftSight exposes any methods for this process,  so that this method can be invoked to convert files to older dwg formats?

Thanks.