SharePoint list column hide

List column hide:

http://littletalk.wordpress.com/2009/03/30/hide-remove-title-column-from-sharepoint-list/

Steps:
1. Select tasks
2. Select list from list tools at the top of the link
3. select list settings
4. select task or work flow task from content type

5. select the column

6. set the column setting

7. select the 3 rd option as "Hidden(will not appear in forms)"