>>545
http://jp.opera.com/browser/download/requirements/

Note: Opera may run on older hardware or an older version of an operating system
however it is likely that it will be less usable. You can download an earlier version
of Opera that may work with your system from our download page.
Just click the links for More Options > Show other versions.

If you are using old hardware or an old operating system and Opera fails to start up,
unfortunately Opera is not suited to your system.