I have a SharePoint 2010 Server that is running an upgraded SharePoint 2007 Content Database. Thanks to the v3/v4 Layout Support, all the "old" Pages still use SharePoint 2007-style layout.
However, all new sites are v4 Layout. As our v4 Master Page isn't done yet, this looks horribly out of place.
Is there a way to create Sites in SharePoint 2010 but have them still use the old v3/2007 Master Page?