how to create a shortcut to a executable file

[zeus2]

I am trying to install the latest version of Thunderbird v 5.0
I've been given the following commands:
cd ~/downloads/ - changes to the directory where you downloaded the package
tar xjf Thunderbird-5.0.tar.bz2 - this will extract the contents of the package into a Thunderbird folder within the current folder.
sudo mv Thunderbird /opt/Thunderbird - moves the Thunderbird folder out of the downloads folder and into the opt folder (note: you may want do an LS and confirm the name of the Thunderbird folder).
I am then told I need to create my own shortcut to the executable file. I need to know how do I create this shortcut, where would I look to find this executable file? I am very much a newbie and any assistance would be really appreciated.
zeus2

[oz]

Hello

Rather than installing from source, you might find it easier to install Thunderbird 5 using APT. You should be able to do that by opening a terminal and issuing the following commands:

sudo add-apt-repository ppa:mozillateam/thunderbird-stable
sudo apt-get update
sudo apt-get install thunderbird

[zeus2]

Thank you ozar, you saved me a lot of frustration and yours was a far simpler way of doing it. Now I have Thunderbird 5.0 nicely set up.
zeus2