I have downloaded DraftSight 3 times and when I double click the file it will not unpack.  I noticed that that version is not supported on XP.  Will an older version of DS open new version DS files?  If so, where can I download an older version.  I also need DS to convert AutoCAD drawings to different versions.  (TruView"s newer versions will also not run on XP.)  I do not really want to upgrade Windows.  Any help would be greatly appreciated.  Thank you.