1. Installation: Chmod public_html folder to 777 or Chmod configure.php file to 777

2. After install, chmod folders here to 777 :

• administrator/backups/
• administrator/components/
• administrator/modules/
• administrator/templates/
• cache/
• components/
• images/ (all files and folder)
  
• language/
• mambots/ (only for Joomla 1.0)
  
• mambots/content/ (only for Joomla 1.0)
• mambots/search/ (only for Joomla 1.0)
• media/
• modules/
• templates/
• tmp/
• logs/