possible break

ok so after a lot more help im now looking to us map data from openstreetmap.org to get all the latitude and longitude information for the roads around the user then use that to create a polly line which i can place markers on it dosent seem too complex at first glance but we shall see one massive benefit is that the site lets you export the map data as an xml so i can then just link the xml to my site to get the date one restriction is you cant get the date for the whole map just sections so to develop this web app so it can work anywhere i would need to divid the world map into grids down load the xml then give each an latlng area reference that would then be used with the users location to load the right xml for the users location but thats just me getting a head of myself need to get this working first