In VSTS 2010 – in MS Test Runner
A defect can be logged against a work item called “BUG” by default.
This bug will have all the details relevant to the test that is run like the information in the following tabs in workitem bug – details tab, System info tab , Test Cases tab, etc .,
Instead of logging defects in workitem “BUG” is it possible to log defects to any other custom workitem but still manage to hold all these details tab , system info tab , test cases tab, etc., into the custom WI.
Please refer the attachment .