How can I extract rules in outlook 2003

After you create the new personal folder (PST), just import mail and settings from the old one. Of course, if all you want is the folder structure and not the emails and settings associated with them, you'll have to recreate those manually.

If all you're looking for is to clean out your current person folders (PST) because it's getting full, just archive the old stuff. This moves everything older than a specific date that you set (except rules and settings) to an archive.pst file and duplicates your folder structure while doing it.