With Google Desktop you will have the archiving capabilities that would have cost 10,000$ only a few years ago. Things become more tricky if want to share your archive on a workgroup level. Here is an idea that I have found in the German Laborjournal
- Shut down your firewall
- Install the freeware DNKA available from dnka.com. It will act as a web server by interacting as a layer between Google Desktop Search and the user
- use http://127.0.0.1:4664 to configure your webserver and offer http://yourIP to your working group.
Need more information? Check geekzone and a nice indexer interface at TweakGDS.