diff -Nur p9m4-0.5/files.py p9m4-0.5.new/files.py
--- p9m4-0.5/files.py	2008-01-14 23:31:00.000000000 +0000
+++ p9m4-0.5.new/files.py	2008-01-14 23:39:51.000000000 +0000
@@ -51,6 +51,9 @@
         return sys.path[0]
         # return os.path.dirname(os.path.abspath(sys.argv[0]))
 
+def data_dir():
+    return '/usr/share/p9m4'
+
 def bin():
     if Win32():
         return 'bin-win32'
@@ -63,13 +66,13 @@
         return 'bin'
 
 def bin_dir():
-    return os.path.join(program_dir(), bin())
+    return '/usr/bin'
 
 def image_dir():
-    return os.path.join(program_dir(), 'Images')
+    return os.path.join(data_dir(), 'Images')
 
 def sample_dir():
-    return os.path.join(program_dir(), 'Samples')
+    return os.path.join(data_dir(), 'Samples')
 
 def binary_ok(fullpath):
     if not fullpath:
diff -Nur p9m4-0.5/prover9-mace4.py p9m4-0.5.new/prover9-mace4.py
--- p9m4-0.5/prover9-mace4.py	2007-12-07 16:27:13.000000000 +0000
+++ p9m4-0.5.new/prover9-mace4.py	2008-02-10 22:45:45.000000000 +0000
@@ -27,6 +27,8 @@
 
 # local imports
 
+sys.path.append('/usr/share/p9m4/lib')
+
 import partition_input
 import utilities
 from files import *