The Howard DNA Project is open to any male descendents of Howard, Haward, Hayward, Heyward, Haywood, Harwood, Heard, Hoard or any variations of these names. The mtDNA Project follows the mother's line in much the same way the DNA Project follows the father's line, though the mother will also pass her mtDNA down to her sons, they cannot pass it on to their children.
Results are also posted to http://www.worldfamilies.net/surnames/howard/results where you can post to the Forum and to the Patriarch page. The more information you add there, the easier it will be to find matches.
Please provide all the information requested on your kit. Your oldest Howard ancestor is one of the most important details you can share along with Birth, death and location. Uploading a gedcom will also help your research and others.