How do I download and install the latest software?

[Howie]

Okay thanks.  I successfully changed my password.  I really appreciate your help. I have been an active flight simulator since 1984, and my old brain is a "little" slower than it used to be. I still love this hobby, and your software make it even better.  Please advise how I download and install the latest version of TDS GTNXI XPlane.

Thanks a lot,
Howard Bloom