I have just setup a wordpress MU install and am playing with setting up blogs using it.
Is it possible to use the database and setup of an existing wordpress (not MU) blog that I have created and essentially import it directly to the new MU install seemelessly.
I could then redirect the URL of the old blog to the new MU installs URL.
Any ideas please?
I believe we just recommend exporting and reimporting via the xml file:
http://bavatuesdays.com/importing-a-single-wp-blog-to-a-wpmu-installation/
I don;t recall anyone trying to do it via the database directly.
Redirecting from the old site to the new one depends on what hosting software you;re running on the server where the old blog is at. (ie That's a host question.)
edit: There's an advanced exporter that may be better for you:
http://mu.wordpress.org/forums/topic/14552