I have received I a Forbidden Exception:
 
API must be accessed through the primary script entry point.

when I try to run the MediaWiki api on several different wikis on one of our servers.  The weird thing is that one wiki on the same server works fine.  I noticed back in July, 2008 that Alexander Schwarz had the same problem.   Someone told him to ‘expose’ the wiki root directory.  I tried that, but it did not work.  I am just trying to get api.php to work first without any parameters. 

Some server specifications:

Windows server 2003 R2 Service Pack 1

Window XP on the work station. 

IIS, php 5.2.8, mysql 5.0.22

I tried to post this question yesterday but I did not see it in my inbox.  Sorry if this is a duplicate.  This email has more information. 

Thanks,

Mary Beebe