Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Rockstar New England
Table title:
Games developed
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Platform(s) </th><th colspan=1 rowspan=1 > Publisher(s) </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td class="highlighted"  colspan=5 rowspan=1 > as Mad Doc Software </td></tr>
<tr> <td colspan=1 rowspan=2 > 2000 </td><td colspan=1 rowspan=1 > Star Trek: Armada </td><td colspan=1 rowspan=5 > Microsoft Windows </td><td colspan=1 rowspan=3 > Activision </td><td colspan=1 rowspan=2 > Support developer for Activision </td></tr>
<tr> <td colspan=1 rowspan=1 > Call to Power II </td></tr>
<tr> <td colspan=1 rowspan=1 > 2001 </td><td colspan=1 rowspan=1 > Star Trek: Armada II </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2002 </td><td colspan=1 rowspan=1 > Jane's Attack Squadron </td><td colspan=1 rowspan=1 > Xicat Interactive </td><td colspan=1 rowspan=1 > Took over development from defunct Looking Glass Studios </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Empire Earth: The Art of Conquest </td><td class="highlighted"  colspan=1 rowspan=1 > Sierra Entertainment </td><td colspan=1 rowspan=1 > N/A </td></tr>
<tr> <td colspan=1 rowspan=3 > 2003 </td><td colspan=1 rowspan=1 > Return to Castle Wolfenstein: Tides of War </td><td colspan=1 rowspan=1 > Xbox </td><td colspan=1 rowspan=2 > Activision </td><td colspan=1 rowspan=2 > Support developer for Gray Matter Interactive </td></tr>
<tr> <td colspan=1 rowspan=1 > Return to Castle Wolfenstein: Operation Resurrection </td><td colspan=1 rowspan=1 > PlayStation 2 </td></tr>
<tr> <td colspan=1 rowspan=1 > Dungeon Siege: Legends of Aranna </td><td colspan=1 rowspan=3 > Microsoft Windows </td><td colspan=1 rowspan=1 > Microsoft Game Studios </td><td colspan=1 rowspan=1 > Co-developed with Gas Powered Games </td></tr>
<tr> <td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > Empire Earth II </td><td colspan=1 rowspan=2 > Vivendi Universal Games </td><td colspan=1 rowspan=4 > N/A </td></tr>
<tr> <td colspan=1 rowspan=2 > 2006 </td><td colspan=1 rowspan=1 > Empire Earth II: The Art of Supremacy </td></tr>
<tr> <td colspan=1 rowspan=1 > Star Trek: Legacy </td><td colspan=1 rowspan=1 > Microsoft Windows, Xbox 360 </td><td colspan=1 rowspan=1 > Bethesda Softworks </td></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Empire Earth III </td><td colspan=1 rowspan=1 > Microsoft Windows </td><td colspan=1 rowspan=1 > Vivendi Games </td></tr>
<tr> <td colspan=1 rowspan=2 > 2008 </td><td colspan=1 rowspan=1 > Turok </td><td colspan=1 rowspan=1 > Microsoft Windows, PlayStation 3, Xbox 360 </td><td colspan=1 rowspan=1 > Disney Interactive Studios </td><td colspan=1 rowspan=1 > Support developer for Propaganda Games </td></tr>
<tr> <td colspan=1 rowspan=1 > Bully: Scholarship Edition </td><td colspan=1 rowspan=1 > Android, iOS, Microsoft Windows, Wii, Xbox 360 </td><td colspan=1 rowspan=1 > Rockstar Games </td><td colspan=1 rowspan=1 > Remaster of Bully by Rockstar Vancouver </td></tr>
<tr> <td colspan=5 rowspan=1 > as Rockstar New England </td></tr>
<tr> <td colspan=1 rowspan=3 > 2008 </td><td colspan=1 rowspan=1 > Iron Man </td><td colspan=1 rowspan=1 > PlayStation 3, Xbox 360 </td><td colspan=1 rowspan=1 > Sega </td><td colspan=1 rowspan=1 > Support developer for Secret Level </td></tr>
<tr> <td colspan=1 rowspan=1 > Brothers in Arms: Hell's Highway </td><td colspan=1 rowspan=1 > Microsoft Windows, PlayStation 3, Xbox 360 </td><td colspan=1 rowspan=1 > Ubisoft </td><td colspan=1 rowspan=1 > Support developer for Gearbox Software </td></tr>
<tr> <td colspan=1 rowspan=1 > Grand Theft Auto IV </td><td colspan=1 rowspan=1 > Microsoft Windows </td><td colspan=1 rowspan=6 > Rockstar Games </td><td colspan=1 rowspan=1 > Ported only, together with Rockstar Toronto; game developed by Rockstar North </td></tr>
<tr> <td colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > Red Dead Redemption </td><td colspan=1 rowspan=1 > PlayStation 3, Xbox 360 </td><td colspan=1 rowspan=1 > Support developer for Rockstar San Diego </td></tr>
<tr> <td colspan=1 rowspan=1 > 2011 </td><td colspan=1 rowspan=1 > L.A. Noire </td><td colspan=1 rowspan=1 > Microsoft Windows, Nintendo Switch, PlayStation 3, PlayStation 4, Xbox 360, Xbox One </td><td colspan=1 rowspan=1 > Support developer for Team Bondi </td></tr>
<tr> <td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > Max Payne 3 </td><td colspan=1 rowspan=1 > macOS, Microsoft Windows, PlayStation 3, Xbox One </td><td colspan=1 rowspan=1 > Developed as part of Rockstar Studios </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > Grand Theft Auto V </td><td colspan=1 rowspan=1 > Microsoft Windows, PlayStation 3, PlayStation 4, Xbox 360, Xbox One </td><td colspan=1 rowspan=1 > Support developer for Rockstar North </td></tr>
<tr> <td colspan=1 rowspan=1 > 2018 </td><td colspan=1 rowspan=1 > Red Dead Redemption 2 </td><td colspan=1 rowspan=1 > PlayStation 4, Xbox One </td><td colspan=1 rowspan=1 > Developed as part of Rockstar Studios </td></tr>
</table>
Question:
What announcement did Sierra Entertainment make about Mad Doc Software and what year was it?
Answer:
In 2002, Sierra Entertainment announced that Mad Doc Software was developed, Empire Earth: The Art of Conquest.