http://msmvps.com/blogs/laflour/archive/2009/02/08/sharepoint-tip-10-do-you-know-how-to-delete-title-column-from-list-library.aspxThere are several standard columns, like "Title" and etc, which can't be delete from lists.  The workaround for this in creating the custom content type list and hiding the "title" column there. Step-by-Step instructions describedenCommunityServer 2008.5 SP2 (Build: 40407.4157)