I am running SoaSE on an XP and A Vista Machine.  The documentation tells me that I can run up to 2 machines on the one key no. but when I try to join a game created on the Vista machine (the XP machine does see the game) it comes back and says that it doesn't have all the files.  I have uninstalled the game from the XP machine and about to reinstall it, and see if that helps.  I believe that something may have happened in the initial install because the "download  Updates" button shuts the game down and  never goes online to the SoaSE  website.  I do know that to get my network at home to work (due to XP on one machine and Vista  on  the other) I had to  download a file from Microsoft. I did that already and it appears to have corrected that problem.  Any help  would be appreciated.
Thanks