Trend Toad for Oracle in action

I've installed Toad for oracle 9.5. the address is below: http://www.orbitsw.net/toad/dls/TOAD%20for%20ORACLE/Toad%20for%20Oracle%209.5%20Dev%20Suite%20Commercial.exe No sooner did I begin to use that than I found that there's a new version 9.6 which supersedes that. The address is below: http://worlddownloads.quest.com.edgesuite.net/Repository/support.quest.com/Toad%20for%20Oracle/9.6.1/Software/Toad%20Development%20Suite%20for%20Oracle%209.6.1%20Commercial.exe Nevertheless, I like this tool so much after I tried it. Personally, I think it's better that PL/SQL developer. But it's not all roses. The Quest code tester for Oracle can't be used unless I could provide an authorization key, which I can't find anywhere. If someone happen to have one valid key, please kindly share with me. I'll truly appreciate that. Time marches on, Learning never ends.