How are you using Team System to track manual testing?

Question

We're considering doing the following:

• Store manual test scripts in Sharepoint
• Create a new "Test Run" Work Item type in Team System
• On each run of the test, create a new Test Run item, linking it to its manual test script
• On each run of the test, store the test evidence on the Test Run Work Item as a file attachment

One problem with this is that since the manual test scripts are in Sharepoint, it's hard to trace from the test case to the individual test runs. We've considered creating a "Test Case" Work Item type, which would give us the traceability, but it's not really an item to be "completed" so it smells funny.

Thanks for any thoughts you might have.