Click on the Delete button in the Forum dialog box. A dialog
box showing all articles in the newsgroup with a checkbox next to each one
appears (see Figure 89).
Figure 89: The Delete entries dialog box
Use the checkboxes to select the article or articles you want to delete.
Note that if you delete an article that has replies, the whole thread will be
deleted.
Click on the OK button. The article or articles will be deleted.