Programmatically access a SharePoint document library?

How would I programmatically access a SharePoint document lib开发者_运维技巧rary from another machine? I want to recursively scan all the folders and generate a list of files with a certain custom property.

You'll need to use the List Data Retrieval web service. Example code using the service can be found on the Query method page.

Vinny is correct. I just wanted to elaborate a little on the next version of SharePoint, SharePoint 2010. There are several client based models for access that essentially wrap the web service calls. There is a managed .NET dll for Windorm/WPF applications, a library for use within websites that is JavaScript based and a Silverlight based implementation.

This MSDN article has links to more information on all three.