Easy job if you have the address.
[php]
function geocode_googlemap_address($address){
$link = "http://maps.google.com/maps/api/geocode/xml?address=".$address."&sensor=false";
$file = simplexml_load_file($link);
if(!$file) {
echo "Err: No access to Google service: ".$a."<br/>n";
}else {
if ($file->status == "OK") {
$lat = (float) $file->result->geometry->location->lat;
$long = (float) $file->result->geometry->location->lng;
echo $lat.",".$long;
}else{
//echo "Err: address not found: ".$a."<br/>n";
}
}
}
[/php]