A new version of the provider for Team Foundation Version Control has been released, that, amongst other enviroments such as VB6 will enable you to connect to TFS using Visual Studio 2003.
This time I also got it working :-). They have done a nice job in integrating the dialogs you know from VS2005 into VS2003. See the screenshots below.
You can download it at MSDN downloads
The scenario I tried is to add a new solution to TFS and then try some check-in some changes.
Step 1. Selecting a Team Foundation Server
Step 2. Logging into TFS. This of course uses your Windows credentials. However it does not automatically log on for some reason...
Step 3. Selecting a Team Foundation Project to add your solution to.
Step 4. Using the checkin dialog to perform the check-in. You can even associate work-items just as in VS2005!
After performing the above steps, a new changeset has been added to TFS, just as expected.
Next to the check-in dialog, you also get a Pending Changes window, as shown below.
In the few scenario's I've tested it has performed without error. So I think we should start migrating a portion of our VS2003 sources into TFS to try real world scenario's. But until now I can only say : Microsoft keep up the good work (and consider supporting the provider officially)