By default,you do not have quicklist option for opera in unity.Though adding is a very simple procedure.The procedure for ubuntu 11.04 is as follows--
1. Open Nautilus as root (ALT+F2 > ‘gksu nautilus’) and navigate to: -Ok,finished.Drag and drop the opera icon from the application lens to the launcher.Right click on the icon and the quicklist will open.
/usr/share/applications/and open the ‘opera-browser.desktop’ file in ‘gedit/text editor’.
2. Once open, scroll to the bottom of the file and paste in the the following text:
X-Ayatana-Desktop-Shortcuts=NewTab;NewPrivateTab;NewWindow;Mail;[NewTab Shortcut Group]
TargetEnvironment=Unity[NewPrivateTab Shortcut Group]
Name=New Private Tab
TargetEnvironment=Unity[NewWindow Shortcut Group]
TargetEnvironment=Unity[Mail Shortcut Group]3. Finally hit save and close Gedit/text editor.
To remove the quicklist option,delete the above mentioned line from the edited file.
To download opera,you need to go www.opera.com