diff --git a/README.md b/README.md
index c2d1e05..0abaf9e 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,18 @@ implementation.
 Setup Instructions
 ------------------
 
-### 1. Set up PostgreSQL & PostGIS ###
+### 1. Download shapefiles
+
+OSM Bright depends on several large shapefiles. You should start downloading these
+now so that they are ready later when you need them for rendering.
+
+Download them to the `osm-bright` directory. You can do this with `wget` like:
+
+    wget http://tilemill-data.s3.amazonaws.com/osm/coastline-good.zip
+    wget http://tilemill-data.s3.amazonaws.com/osm/shoreline_300.zip
+    wget http://mapbox-geodata.s3.amazonaws.com/natural-earth-1.3.0/physical/10m-land.zip
+
+### 2. Set up PostgreSQL & PostGIS ###
 
 If you don't already, you need to have [PostgreSQL][] installed & running with
 a [PostGIS][] database setup within it. See the [PostGIS documentation][1] for
diff --git a/configure.py.sample b/configure.py.sample
index 31fabf9..b3ea745 100755
--- a/configure.py.sample
+++ b/configure.py.sample
@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-from os import path
+from os import path, getcwd
 from collections import defaultdict
 config = defaultdict(defaultdict)
 
@@ -28,14 +28,19 @@ config["postgis"]["password"] = ""
 # in the same units as the database (probably spherical mercator meters). The
 # whole world is "-20037508.34 -20037508.34 20037508.34 20037508.34".
 # Leave blank to let Mapnik estimate.
-config["postgis"]["extent"] = "-20037508.34 -20037508.34 20037508.34 20037508.34"
+config["postgis"]["extent"] = "-20037508.34,-20037508.34,20037508.34,20037508.34"
 
 # Land shapefiles required for the style. If you have already downloaded
 # these or wish to use different versions, specify their paths here.
 # OSM land shapefiles from MapBox are indexed for Mapnik and have blatant 
-# errors corrected (eg triangles along the 180 E/W line), but are updated
-# infrequently. The latest versions can be downloaded from osm.org:
+# errors corrected (eg triangles along the 180 E/W line). They can be download
+# from:
+# - http://tilemill-data.s3.amazonaws.com/osm/coastline-good.zip
+# - http://tilemill-data.s3.amazonaws.com/osm/shoreline_300.zip
+# But, they are updated infrequently. The latest versions can be downloaded from osm.org:
 # - http://tile.openstreetmap.org/processed_p.tar.bz2
 # - http://tile.openstreetmap.org/shoreline_300.tar.bz2
-config["processed_p"] = "http://tilemill-data.s3.amazonaws.com/osm/coastline-good.zip"
-config["shoreline_300"] = "http://tilemill-data.s3.amazonaws.com/osm/shoreline_300.zip"
+config["processed_p"] = path.join(getcwd(),"coastline-good.zip")
+config["shoreline_300"] = path.join(getcwd(),"shoreline_300.zip")
+# http://mapbox-geodata.s3.amazonaws.com/natural-earth-1.3.0/physical/10m-land.zip
+config["land"] = path.join(getcwd(),"10m-land.zip")
diff --git a/make.py b/make.py
index 68a2a81..97f0cf3 100755
--- a/make.py
+++ b/make.py
@@ -45,6 +45,8 @@ def build():
       layer["Datasource"]["file"] = config["shoreline_300"]
     elif layer["id"] in ("processed_p", "processed_p_outline"):
       layer["Datasource"]["file"] = config["processed_p"]
+    elif layer["id"] in ("land"):
+      layer["Datasource"]["file"] = config["land"]
     else:
       # Assume all other layers are PostGIS layers
       for opt, val in config["postgis"].iteritems():
@@ -87,6 +89,7 @@ def pull():
   defaultconfig["name"] = "OSM Bright"
   defaultconfig["processed_p"] = "http://tilemill-data.s3.amazonaws.com/osm/coastline-good.zip"
   defaultconfig["shoreline_300"] = "http://tilemill-data.s3.amazonaws.com/osm/shoreline_300.zip"
+  defaultconfig["land"] = "http://mapbox-geodata.s3.amazonaws.com/natural-earth-1.3.0/physical/10m-land.zip"
 
   project["name"] = defaultconfig["name"]
   for layer in project["Layer"]: