This is currently a very rapidly evolving area. To keep up-to-date it's best to subscribe to the ASCOM-Talk group on yahoogroups.com.
Evan has been working hard on this stuff. Here's a link to a recent update from Evan on ASCOM-Talk:
http://tech.groups.yahoo.com/group/A.../message/23438
And quoting from the ASCOM standards web site:
"Software Bisque has implemented a
cross-platform driver architecture called X2 that provides interfacing with astronomical devices from
TheSkyX Professional. The ASCOM X2 Integration project has the goal of developing generic X2 drivers that convert from X2 to ASCOM, allowing
TheSkyX to take advantage of all existing ASCOM drivers. The new X2 drivers will replace the old
TeleAPI, FocusAPI, and DomeAPI plugins that are legacy from
TheSky6. The X2 interfaces provide a richer set of capabilities, allowing
TheSkyX to take advantage of more features of devices via their ASCOM drivers. In development are generic X2 to ASCOM drivers for Mounts, Focusers, Cameras, Filter Wheels, Rotators, and Domes. Some of the X2 interfaces themselves are evolving, so we're tracking these developments. Look for the first set of these X2 to ASCOM drivers early Summer 2011."
"Note that ASCOM is Windows-only, so these X2 to ASCOM drivers will not work with
TheSkyX Professional running on Mac OS X."