Using Alias with Run Application

If you define an alias, it will then run in the "Run Application" window. You can put a bash script in your home folder, make it executable, and use the following command to run it from "Run Application".

xterm -e ./myscript.sh

You can try to research the following to avoid using xterm.
Refer: link

Use Ubuntu with VirtualBox Behind Proxy

There seems to be problems with Ubuntu 9.04. It is possible to install from CD-ROM instead by using:

  1. Press System → Administration → Software Sources.
  2. Go to the Third Party Software tab and click on the Add CD-ROM button.
  3. Insert the CD.

Do the following in your terminal prior to using apt-get:
export http_proxy=http://username:pword@HALPROXY1.flagship.hal.com:80

Virtual Box Settings