Simple Web Testing with Team Test Edition
Team System's web testing functionality is, in my opinion, one of the strongest features in any of the Team System Editions. The web test functionality is only included in
Team Test Edition and, of course,
Team Suite-- which has everything.
Here's how easy it is to create a basic web test. First, add a test project to your solution via
File, New, Project, Web Test:

The
new test project will show up in your solution, and your first empty web test will be open by default:

At this point you would typically launch the web recorder, which is based on an IE plugin. You can do that by clicking the red "record" button on the toolbar, or right clicking and selecting
Add Recording.

I'm recording a simple little web site that echoes back whatever we typed in a label with "Hello, " prefixed. This is why I make the big bucks as a professional developer, people!
Once I've completed the recording, the
recorded HTTP transactions will show up in the web test. One request, one post:

Let's make this a real web test by right clicking and
adding a validation rule to the second step, the post:

We'll check the results for the string "Hello, Cleveland!". Now that we've added our validation rule and made this a bona-fide test,
click the run button on the toolbar to run it:

Woo-hoo! We passed!
Of course, I'm barely scratching the surface of what you can do here, but it's pleasingly simple to get a basic test up and running. And that's one less excuse for not having web tests on
your web project.