In order to access your TFS server using a different URI (over the internet for example) run the following query against your TFS Data Tier:

use TFSIntegration

Declare @OldName varchar(255)
Declare @NewName varchar(255)

select @OldName = url from tbl_service_interface where [name] = 'DataSourceServer'
set @NewName = <NEW_SERVER_NAME>

update tbl_service_interface
set url = replace(url,@OldName, @NewName)
Where url like '%'+@OldName+'%'

--SELECT     [name], url, replace(url,@OldName, @NewName)
--FROM         tbl_service_interface
--Where url like '%'+@OldName+'%'

You will need to add the new URI to Team Explorer using the "Add Server" option.

We all think that we do not need any documentation to install any product as we are real professionals, aren't we... But let me say, installing TFS without reading the docs before will let you learn to do your work more than 4 or 5 times.

So: Read the manuel before any other step and be sure to prepare all recommended steps. TFS Setup is a new way of setup (I never saw another product yet like this) and will check deep in your system, if your requirements are fulfilled.

Wondering how to install Team Foundation Server? I wrote up a quick install guide for Team Foundation Server, which is available here:

I call it the "Cliff's Notes Guide to Installing Team Foundation Server"

http://blogs.vertigosoftware.com/teamsystem/archive/2006/04/04/2512.aspx