1. Not legally unless you have a prior licensed version of Weatherlink. The link given is for firmware, not software.
2. It _should_ be possible to directly read the console but not using the Davis logger which uses a 1 minute interval. I can't recall the update times but IIRC only some of the ISS sensors update more frequently than 1 minute.
3. Once you get the data as in #2, any FTP software can update a server as quickly as you like.