Now you can google your dwg or dxf files within your computer with this free AutoDWG DWG Indexer.
AutoDWG DWG Indexer is a freeware that searchs full text in dwg or dxf files. a thumbnail is also created for each dwg file in the search list.

DWG indexer 1.01 download in progress...

If your download doesn't begin automatically, click and download here.