I created this group to see what kind of interest there is in running Drupal 7 on a Windows environment. There is already a group to dedicated to Drupal on IIS, which has a good following of people interested in getting Drupal running under Microsoft's Internet Information Servier. The group is mostly focused on Drupal 6, and has some good content.
I wanted a group to discuss the specific issues around running Drupal 7 on Windows, particularly the use of Microsoft's SQL Server as a replacement for MySQL. This is made possible by the work done by a team at Microsoft that wrote a driver for SQL Server, and then packaged up the whole thing as an installable item.
So, welcome to the group. I hope this group furthers the effort to get more Windows developers interested in the wonderful world of Drupal.