--- a/cygwin.rst	Tue May 04 20:50:45 2010 +0300
+++ b/cygwin.rst	Tue May 04 21:38:40 2010 +0300
@@ -22,3 +22,14 @@
 Set HOME env var (where places config file and projects):
 
   set HOME=d:\home
+
+Also you need edit /etc/passwd to point to correct home path.
+
+* Users and groups.
+
+** Recreate /etc/passwd and /etc/groups.
+
+  $ mkpasswd -d | grep $yourlogin > /etc/passwd  # if you in Windows domen
+  $ mkpasswd -l > /etc/passwd                    # if you in Windows domen
+
+  $ mkgroup -l > /etc/group