diff --git a/checks.py b/checks.py
index a640e7f..15f77ab 100644
--- a/checks.py
+++ b/checks.py
@@ -36,7 +36,7 @@ class checks(object):
   
   def arch(self):
     """docstring for arch"""
-    return(800, "ARCH", platform.system())
+    return(800, "Arch", platform.system())
   # def arch
   
   def hostname(self):
diff --git a/userconfig.py b/userconfig.py
index 6a69030..923e5db 100755
--- a/userconfig.py
+++ b/userconfig.py
@@ -13,21 +13,67 @@ Copyright (c) 2013 __MyCompanyName__. All rights reserved.
 
 import sys
 import os
+import tempfile
 from checks import checks
 
 classchecks = checks()
-
 configdir = "../"
-
 hostclasses = classchecks.__classesForHost__()
+verbose = 1
 
-def work(directory):
+def debug(out, level=0):
+  """docstring for debug"""
+  if verbose:
+    if level > 0:
+      print "*"*level,out
+    else:
+      print out
+  # if verbose
+# def debug
+
+def getDEST(directory):
+  """docstring for getDEST"""
+  f = open(directory+"/DEST")
+  destdir= f.read()[:-1]
+  if destdir == "$HOME":
+    destdir = os.environ['HOME']
+  # if $HOME
+  if not destdir.endswith("/"):
+    destdir += "/"
+  # if not /
+  return destdir
+# def getDEST
+
+def workconf(directory, destdir, depth=2):
+  """docstring for workconf"""
+  dirs = os.listdir(directory)
+  ret = []
+  for d in dirs:
+    name = directory+"/"+d
+    if os.path.isdir(name):
+      # fixme: create name
+      workconf(name, destdir, depth+1)
+    # if dir
+    ret.append(name)
+    debug("workconf: found file %s" % name, depth)
+  # for d
+  return ret
+# def workconf
+
+def workdir(directory):
   """docstring for work"""
+  debug("===============================", 1)
+  
   if not os.path.isfile(directory+"/DEST"):
+    debug("No DEST in %s, skipping." % directory, 1)
     return
   # if not DEST
-  dirs = os.listdir(directory)
-  dirs.remove("DEST")
+  destdir = getDEST(directory)
+  # destfiles is a dict of all files that will be created from the classes config
+  # key is the destination filename, values are all classes filenames that are used to
+  # build the file
+  destfiles = {}
+  # Schritt 1: Dateien einlesen
   for h in hostclasses:
     if h[0] != "":
       classdir = directory+"/"+h[0]+"_"+h[1]
@@ -35,14 +81,65 @@ def work(directory):
       classdir = directory+"/"+h[1]
     # if all
     if os.path.isdir(classdir):
-      print "Directory",classdir,"exists."
+      debug("workdir: %s" % classdir, 1)
+      tempfiles = workconf(classdir, destdir)
+      # tempfiles is a list of files within one classdir
+      
+      for f in tempfiles:
+        destname = destdir+os.path.basename(f)  # destination filename
+        if not destfiles.has_key(destname):
+          destfiles[destname] = []
+        # if not destname, create key with empty list
+        destfiles[destname].append(f) # append each file to dict
+      # for tempfiles
     # if classdir
   # for hostclasses
-  return
+  debug("workdir: %s, Files: %s" % (directory, str(destfiles)))
+  debug("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^", 1)
+  return destfiles
 # def work
 
+def buildFile(destfile, classfiles):
+  """docstring for buildFile"""
+  content = []
+  for f in classfiles:
+    fp = open(f, "r")
+    content.append(fp.read())
+    fp.close()
+  # end f
+  
+  (tempfd, tempfilename) = tempfile.mkstemp(prefix=os.path.basename(destfile), dir="/tmp")
+  
+  fp = None
+  try:
+    fp = os.fdopen(tempfd, "w")
+  except:
+    print "Cannot write to temporary file",tempfilename
+    os.remove(tempfilename)
+    sys.exit(1)
+  # try
+  
+  for block in content:
+    fp.write(block)
+    fp.write("\n")
+  # for content
+  fp.close()
+  # fixme: diff tempfilename destfile
+  # fixme: header marker for "is under userconfig control"
+  # fixme: if diff and not under userconfig control, backup destfile
+  # fixme: copy tempfilename to destfile
+  # fixme: remove tempfilename
+# def buildFile
+
+def buildAllFiles(destfiles):
+  """docstring for buildFiles"""
+  for df in destfiles.keys():
+    buildFile(df, destfiles[df])
+  # for df
+# def buildAllFiles
+
 def main():
-  print "Classes for host:",hostclasses
+  debug("Classes for host: %s" % hostclasses)
   for d in os.listdir(configdir):
     name = configdir+d
     if not os.path.isdir(name):
@@ -52,7 +149,9 @@ def main():
     elif os.path.isfile(name+"/.ignore"):
       continue
     else:
-      work(name)
+      debug("main: %s" % name)
+      destfiles = workdir(name)
+      buildAllFiles(destfiles)
     # if
   # for d
 # def main