The Simerian Explorer Map was part of an account upgrade in mid and late 2008. It is no longer available. The pieces can be bought if you are lucky enough to find one in shop search. But the inflation of the pieces is such that they are more likely to cost at least 500 thousand (YES that is 500,000 marapoints) per piece. Most of the information you need about the quest can be found in this page: The Maradan Chronicles Simerian Explorer Runes Guide. The names of the map pieces you need to complete the map and have LIFETIME access to the Simerian Explorer quest: