idk wordpress so i can't tell you how it's done, but check this out:
if u click http://hauserdesigngroup.com/wordpress/?p=1032
you'll get 301 redirection to http://hauserdesigngroup.com/wordpre...in-10-seconds/
i'm guessing it's some config variable in wordpress. try adding www prefix there (just guessing at this point).
in fact your wordpress site is stripping www. prefix if you try to use it.
also check this: http://wordpress.org/support/topic/m...d-to-multisite