Install Flex builder in Ubuntu 8.0.4

The blog that follow use a ubuntu 8.04 computer
1 install jre

#sudo apt-get install sun-java6-jre

#sudo update-alternatives --config java

There are 2 alternatives which provide `java'.
Selection Alternative
-----------------------------------------------
1 /usr/bin/gij-wrapper-4.1
*+ 2 /usr/lib/jvm/java-6-sun/jre/bin/java
Press enter to keep the default[*], or type selection number:

choice 2

Then,

#sudo gedit /etc/environment

add the following 2 lines:

CLASSPATH=.:/usr/lib/jvm/java-6-sun/lib
JAVA_HOME=/usr/lib/jvm/java-6-sun

then,

#sudo gedit /etc/jvm

put the following to the top of this document

/usr/lib/jvm/java-6-sun

2 download flexbuilder_linux_install_a4_081408.bin and pdt-all-in-one-linux-gtk-1.0.3.tar.gz
Note:The version of eclipase must great than 3.2, so do not install it use

#sudo apt-get install eclipse

3 install flex builder

# ./flexbuilder_linux_install_a4_081408.bin