Microsoft Sharepoint technology is allows us to interface with its content via WebDav.
The Sharepoint File System is a proprietary web folder (WebDAV) implementation that is served through IIS 6.0.
WebDAV RFC 2518 (http://www.ietf.org/rfc/rfc2518.txt) defines WebDAV as a set of methods, headers, and content-types ancillary to HTTP/1.1 for the management of resource properties, creation and management of resource collections, namespace manipulation, and resource locking (collision avoidance). Read more on WebDAV at http://www.webdav.org.
The general way that you normally interface with a WebDav enabled server is via My Network Places
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Open Windows Exploer
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Select "My Network Places" on the left pane under "Other Places"
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Click on "Add a Network Place"
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The "Add Network Place" wizard will then start, click on Next
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Select "Choose another network location" and click next
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Type in your path to your document library such as "http://www.mywebserver.com/Shared Documents" and click next
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Give it a name and click next
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Click finish

Your Network Place will then be displayed in an explorer window. This window however does use the full path that you specified as the location/address in Explorer ( \\www.mywebsite.com\Shared Documents ). Wouldn't it be nicer to map it to a drive letter such as X: so that any application can save directly into the Sharepoint document library?
Well you can if you follow these steps instead.
From Windows Explorer
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Open Windows Explorer
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Select Tools / Map Network Drive
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Select your drive letter
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Under Folder : enter your url to your document library such as "http://www.mywebserver.com/Shared Documents"
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If you want to connect as a specific user click "Connect using a different name" and enter the other user credentials.
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Click on Finish

From a CMD.EXE Prompt
- Start a command prompt (type cmd.exe into the Start-Run option)
- Type in the following:
net use x: "http://www.mywebserver.com/Shared Documents" /user:DOMAIN\LOGIN PASSWORD
- You will now have a drive letter mapped to the Shared Documents folder.
Note: You will need to enable the WebClient service if it is not running already on Windows XP