Dear all, here is the direct way to install Arial and other microsoft fonts in ubuntu.
just issue the following 2 commands as a root and accept any upcoming messages (click tab to move between options )
sudo apt-get install ttf-mscorefonts-installer
Accept some license issues and so, just by clicking Ok to the popup dialogues
you will got this message when you done
All done, no errors.
All fonts downloaded and installed.
Updating fontconfig cache for /usr/share/fonts/truetype/msttcorefonts