Leo,
Depending on your OS, you should be able to use;
Win:
http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase6-419 409.html
Mac:
http://support.apple.com/kb/DL1572
Some have found that the page may turn up blank to start with, so it may be necessary to reload the page.
Others have found that it may depend on browser. Specifically, a switch from Safari has solved it in one case.