I have had some readers tell me that my link to Microsoft's back-ported membership API is not working.  I am aware of that.  Apparently it has been pulled so that it can be brought into sync with Beta 2.  There have been a few database changes for the SQL providers and some minor API changes.  I hope we see it back online soon, but I have no idea when it will show up again.  In the meantime you can still get it the hard way.