Getting an mdb-based ASP.Net application working

Aaah,
I've had a couple of hours battling with an ASP.Net application that keeps returning 'Operation must use an updateable query'.

And now I've solved it.  It was a permissions problem.  I loosely followed the steps at: http://www.howtodothings.com/computers/a834-error-hy000-operation-must-use-an-updateable-query.html

Specifically, it included switching off Use Simple File Sharing and giving the IUSR_xxxx account full permissions of the app_data directory.

Anyway, it's working now.   No, .Net web server management isn't one of my core skills.

Cool.