Use TFS with Visual Studio 2003

TFS was not designed to be run for Visual Studio 2003. However, there are a couple of ways you can use VS 2003 with TFS.

Workaround:
1. Create a TFS workspace, and put the VS 2003 Source code and project into it.

2. In the VS 2005, open the Source Control Explorer (View > Other Windows > Source Control Explorer). Get Latest of the 2003 Version (Right Click on the folder). This gets all the code to the client system without trying to open the solution or any of its projects, which would trigger the VS 2003 to VS 2005 conversion wizard. If this is run, it will make the project unusable.

3. From here you work with the project using an instance of VS 2003, using the separate VS 2005 instance to do your check-outs and check-ins.

Another Solution:
Download and install the Visual Studio 2005 Team Foundation Server MSSCCI Provider. According to the Microsoft page, this should work with the following:

Visual Studio .NET 2003
Visual C++ 6 SP6
Visual Visual Basic 6 SP6
Visual FoxPro 9 SP1
Microsoft Access 2003 SP2
SQL Server Management Studio
Sparx Systems Enterprise Architect 6.1
Sybase PowerBuilder 10.5
Toad for SQL Server 2.0

If you do not have it installed, you will need The team Explorer 2005.

Once you installed both of them. You will have a little problem: you will not be able to use VSS anymore. But there is another workaround!

To be able to choose again which source control you want to use (VSS or TFS), you will need to change some registry keys information. While it's easy to do so, I prefered to just download another tool that will allow me to switch back and forth.

The tool is called SCC Switcher, you can download it from http://www.codeproject.com/KB/applications/sccswitcher.aspx