diff --git a/houy.py b/houy.py
index 4dade76..35481cf 100755
--- a/houy.py
+++ b/houy.py
@@ -8,35 +8,41 @@ import subprocess
 
 if __name__ == '__main__':
     r = {environ.get('PATH')}
-    setup_path = {
-        'darwin': '/Applications/Houdini/Houdini17.5.173/Frameworks/Houdini.framework/Versions/Current/Resources',
-        'linux': '/opt/hfs17.5.229',
-        'win32': 'C:\Program Files\Side Effects Software\Houdini 17.5.173'
-    }
-    if platform not in setup_path:
-        print('Platform `{}` not supported... yet.'.format(platform), file=stderr)
-        exit(1)
-    chdir(setup_path[platform])
-    if '-rs3' in argv:
-        redshift_path = '/opt/redshift3'
+    setup_path = getenv('HFS')
+    if not setup_path:
+        # Use static paths
+        setup = {
+            'darwin': '/Applications/Houdini/Houdini17.5.173/Frameworks/Houdini.framework/Versions/Current/Resources',
+            'linux': '/opt/hfs17.5.229',
+            'win32': r'C:\Program Files\Side Effects Software\Houdini 17.5.173'
+        }
+        if platform not in setup.keys():
+            print('Platform `{}` not supported... yet.'.format(platform), file=stderr)
+            exit(1)
+        setup_path = setup[platform]
+    chdir(setup_path)
+
+    if platform == 'win32':
+        if '-rs3' in argv:
+            redshift_path = 'C:/ProgramData/Redshift3'
+        else:
+            redshift_path = 'C:/ProgramData/Redshift'
     else:
-        redshift_path = '/opt/redshift'
+        if '-rs3' in argv:
+            redshift_path = '/opt/redshift3'
+        else:
+            redshift_path = '/opt/redshift'
+
     environ.update({
         'HOUDINI_NO_SPLASH': '1',
         'HOUDINI_DSO_ERROR': '2',
-        'PATH': ':'.join(['{}/bin'.format(redshift_path),
+        'PATH': ';'.join(['{}/bin'.format(redshift_path),
                           environ.get('PATH')]),
-        'HOUDINI_PATH': '{}/redshift4houdini/17.5.173;&'.format(redshift_path),
-        'REDSHIFT_COREDATAPATH': '{}'.format(redshift_path),
+        'REDSHIFT_COREDATAPATH': redshift_path,
+        'HOUDINI_OCL_DEVICETYPE': 'GPU',
+        'HOUDINI_OCL_DEVICENUMBER': '0',
+        'HOUDINI_PATH': "{}/Plugins/Houdini/17.5.173;&".format(redshift_path),
     })
-    if platform == 'win32':
-        #call(['runas', '/noprofile', '/user:Administrator', r'"c:\Windows\System32\tscon.exe {} /dest:console"'.format(getenv('SessionName'))], env=environ)
-        environ.update({
-            'PATH': "C:/ProgramData/Redshift/bin;$PATH",
-            'HOUDINI_PATH': "C:/ProgramData/Redshift/Plugins/Houdini/17.5.173;&",
-            'HOUDINI_OCL_DEVICETYPE': 'GPU',
-            'HOUDINI_OCL_DEVICENUMBER': '0',
-        })
 
     # Initialize env vars.
     if platform != 'win32':