1.To get The Flex SDK 4 Gumbo (flex sdk are compiler for flex)
http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4
Or
http://opensource.adobe.com/
2.To get The "mxml.vim" and "actionscript.vim" (to make color hilight for flex in vim)
http://www.abdulqabiz.com/files/vim/
3.To get The "flex.vim" (to compile flex in vim)
http://www.vim.org/scripts/script.php?script_id=1746
