Who would have thought that to create a sub-site you don’t use the admin.asmx web service, rather the meetings.asmx service.
After a day of friggin’ about using admin (because everything I read on the web said it was the one to use to create a site!), I stumbled across a blog post that told me I should be using meetings.asmx, because admin.asmx is only for creating Site Collections!
Yet another DUH! moment from Microsoft, or is it just me that thinks using a web service called meetings is not that obvious as the container of a method to create sub-sites….