Prerequisite Software For More Information If you will be creating new dialogs for your toolkit application, install Tivoli Application Extension Facility (AEF), Version 3.6 See the  TME 10 AEF Release Notes and the  TME 10 AEF Users Guide. Tivoli SecureWay User Administration, Version 3.8 See the  Tivoli SecureWay User Administration Release Notes  and the  Tivoli SecureWay User Administration Management Guide. Tivoli SecureWay User Administration Gateway Package, Version 3.8 See the  Tivoli SecureWay User Administration Release Notes  and the  Tivoli SecureWay User Administration Management Guide. Perl, Version 5.6 or later (optional) The Perl software is available from several sources, including the following Web sites. ¶   For UNIX: www.perl.com ¶   For Windows NT/2000: http://sources.redhat.com/ cygwin http://aspn.activestate.com/ ASPN/Downloads/ActivePerl See  “Creating Custom Applications” on page 49. 2.    Verify that your system has sufficient memory and disk space. The previous table provides references to documents that can help you determine the system requirements. 3.    Ensure that you understand the security requirements for your Tivoli environment. 4.    Before and after installing any software package, it is a good idea to back up your Tivoli database. From the Tivoli desktop, select the  Backup  option to perform a backup of the Tivoli managed nodes and server. To perform a backup from the command line, use the  wbkupdb  command. See the  Tivoli Enterprise Installation Guide  for details. Before Installing the Toolkit 6 User Administration Version 3.8