Home 5.x depends on map module, but map is not available for this version of Drupal

http://herts-lettings.co.uk/node/239/map

If you look at the above node you will see that the map does not show. I suspect that this is because I was not able to install the map module, because I am running on Drupal 5.1,? but the map module is not available for this version of Drupal.

I wonder if the solution is to replace the map with gmap module, although I fear there may be a problem because the latter does not really support a new node type 'map'.