Sample senario.
Auto e-mail when Test status set to Ready
Sub Test_FieldChange(FieldName) On Error Resume Next
If Test_Fields("TS_STATUS").Value="Ready for Testing" then tdc.SendMail "TestPlan Lead","TS_DESIGNER","Tests are ready for Testing","TS_SUBJECT""TS_DESCRIPTION",NULL,"HTML"
End if
On Error
Hope this helps.
Thanks,
Avi.