Copy list from one Sharepoint site to another site

I have a 2007 SharePoint site called Beta. On Beta, I have a custom List called MapData. This is a custom list of data that a webpart reads from. Data has been typed into Beta to make开发者_JAVA百科 sure the webpart works correctly.

In production, called Prod, I have that same List called MapData except it has old values. How can I copy the data from one site to another. Beta and Prod are on different servers. I would like to do this without writing C# or something. Is it possible use the command line to just backup that list and restore it on a different server or possibly use Sharepoint designer?

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The following options are not without drawbacks, but they are codeless:

1. If the list is not too large, you can save it as a template, copy the .stp file from Beta to Prod, and create a new list based on the template.
2. STSADM has export/import
3. Gary LaPointe's custom STSADM command for this job: http://stsadm.blogspot.com/2007/11/import-export-copy-and-delete-lists.html

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I'm actually looking to sync the two lists. I need one to be the data that the public can see, while the other (parent list) has all of the public and private data.