Thank you Jason, but that applies to Addresses. Many of the these historical sites have no addresses.
Anyway, I figured it out from the Google Maps sites and I did the following ant it seems to work.
In wagmp_map_1.php, find the following line at the end of the script
<?php } while ($row_DetailRS1 = mysql_fetch_assoc($DetailRS1)); ?>
Type in the following code after the above line
map.setCenter(new GLatLng(52.1188, -8.29158),12);
The 12 is the zoom level. I have to dynamically change the Lat and Lng yet, put the above does the trick for my testing.