diff --git a/scrapy/trunk/scrapy/contrib/pbcluster/master/manager.py b/scrapy/trunk/scrapy/contrib/pbcluster/master/manager.py
index d58465e49..0a5d9462d 100644
--- a/scrapy/trunk/scrapy/contrib/pbcluster/master/manager.py
+++ b/scrapy/trunk/scrapy/contrib/pbcluster/master/manager.py
@@ -11,14 +11,7 @@ from scrapy.core.engine import scrapyengine
 from scrapy.core.exceptions import NotConfigured
 from scrapy.conf import settings
 
-priorities = { 20:'NORMAL',
-               10:'QUICK',
-                0:'NOW',
-}
-
-# Set priorities module attributes
-for val, attr in priorities.items():
-    setattr(sys.modules[__name__], "PRIORITY_%s" % attr, val )
+DEFAULT_PRIORITY = settings.getint("DEFAULT_PRIORITY") or 20
 
 def my_import(name):
     mod = __import__(name)
@@ -244,7 +237,7 @@ class ClusterMaster:
     def remove_node(self, nodename):
         raise NotImplemented
 
-    def schedule(self, domains, spider_settings=None, priority=PRIORITY_NORMAL):
+    def schedule(self, domains, spider_settings=None, priority=DEFAULT_PRIORITY):
         i = 0
         for p in self.pending:
             if p['priority'] <= priority:
diff --git a/scrapy/trunk/scrapy/contrib/pbcluster/master/web.py b/scrapy/trunk/scrapy/contrib/pbcluster/master/web.py
index abf17e4ea..55b30167b 100644
--- a/scrapy/trunk/scrapy/contrib/pbcluster/master/web.py
+++ b/scrapy/trunk/scrapy/contrib/pbcluster/master/web.py
@@ -4,7 +4,7 @@ from pydispatch import dispatcher
 
 from scrapy.spider import spiders 
 from scrapy.management.web import banner, webconsole_discover_module
-from scrapy.contrib.pbcluster.master.manager import *
+from scrapy.contrib.pbcluster.master.manager import ClusterMaster, DEFAULT_PRIORITY
 from scrapy.utils.serialization import serialize
 
 class ClusterMasterWeb(ClusterMaster):
@@ -61,7 +61,7 @@ class ClusterMasterWeb(ClusterMaster):
             else:
                 sep = "\r"
                 domains = args["schedule"]
-            priority = int(args.get("priority", ["PRIORITY_NORMAL"])[0])
+            priority = int(args.get("priority", [DEFAULT_PRIORITY])[0])
             
             #spider settings
             slist = args.get("settings", [""])[0].split(sep)
@@ -162,14 +162,9 @@ class ClusterMasterWeb(ClusterMaster):
             s += "<option>%s</option>\n" % domain
         s += "</select>\n"
         s += "<br />\n"
+        
         s += "Priority:<br />\n"
-        s += "<select name='priority'>\n"
-        for p, pname in priorities.items():
-            if pname == "NORMAL":
-                s += "<option value='%s' selected>NORMAL</option>" % p
-            else:
-                s += "<option value='%s'>%s</option>" % (p, pname)
-        s += "</select>\n"
+        s += "<input type='text' name='priority'>%s</input>" % DEFAULT_PRIORITY
         s += "<br />\n"
         
         #spider settings
diff --git a/scrapy/trunk/scrapy/contrib/pbcluster/master/ws_api.txt b/scrapy/trunk/scrapy/contrib/pbcluster/master/ws_api.txt
index 52fc95ca4..0f84c9620 100644
--- a/scrapy/trunk/scrapy/contrib/pbcluster/master/ws_api.txt
+++ b/scrapy/trunk/scrapy/contrib/pbcluster/master/ws_api.txt
@@ -14,13 +14,8 @@ Query parameters
 
  - `schedule`: schedules a comma separated list of domains. Schedule function takes optional parameters:
 
-    "priority": sets the queue priority for the specified domains. You can use a positive integer or the following predefined values:
-
-                    PRIORITY_NORMAL (=20)
-                    PRIORITY_QUICK  (=10)
-                    PRIORITY_NOW    (=0)
-
-                by default, PRIORITY_NORMAL is used.
+    "priority": sets the queue priority for the specified domains (an integer). The default is setted by "DEFAULT_PRIORITY"
+                setting (20 if not given). A lower priority number implies more priority.
 
     "settings": run settings for the specified domains. This is a comma separated list of <setting_name>=<value> pairs. By default it is empty.
 
@@ -39,9 +34,9 @@ Query parameters
 Examples:
 ---------
 
-1) Schedule argos.co.uk, diy.com, littlewoodsdirect.com spiders, with priority=PRIORITY_NOW, and settings UNAVAILABLES_NOTIFY=2 and UNAVAILABLES_DAYS_BACK=3. Answer with pprint format
+1) Schedule argos.co.uk, diy.com, littlewoodsdirect.com spiders, with priority=0, and settings UNAVAILABLES_NOTIFY=2 and UNAVAILABLES_DAYS_BACK=3. Answer with pprint format
 
-    http://localhost:8080/cluster_master/ws/?format=pprint&schedule=argos.co.uk,diy.com,littlewoodsdirect.com&priority=PRIORITY_NOW&settings=UNAVAILABLES_NOTIFY=2,UNAVAILABLES_DAYS_BACK=3
+    http://localhost:8080/cluster_master/ws/?format=pprint&schedule=argos.co.uk,diy.com,littlewoodsdirect.com&priority=0&settings=UNAVAILABLES_NOTIFY=2,UNAVAILABLES_DAYS_BACK=3
 
 2) Get status with pprint format:
 
diff --git a/scrapy/trunk/scrapy/contrib/pbcluster/tools/scrapy-cluster-ctl.py b/scrapy/trunk/scrapy/contrib/pbcluster/tools/scrapy-cluster-ctl.py
index ab25bbff8..2125f7143 100755
--- a/scrapy/trunk/scrapy/contrib/pbcluster/tools/scrapy-cluster-ctl.py
+++ b/scrapy/trunk/scrapy/contrib/pbcluster/tools/scrapy-cluster-ctl.py
@@ -47,7 +47,7 @@ def main():
     elif opts.schedule and domains:
         post["schedule"] = domains
         if opts.now:
-            post["priority"] = "PRIORITY_NOW"
+            post["priority"] = "0"
             post["settings"] = "UNAVAILABLES_NOTIFY=2"
     elif opts.remove and domains:
         post["remove"] = domains