Can't open generator

[ltownsend]

When I try to open my domain/generator, I get a "Directory Listing Denied. This Virtual Directory does not allow contents to be listed." My server host said that I have write permissions to the IUSR account and the IWAM account. When I enter domain/generator/index.php, it just goes to my domain's search page. It looks like the files and folders are in the correct places; what am I doing wrong?

[XML-Sitemaps Support]

Hello,

It looks like your host doesn't support PHP language though (which is required). Could you please check that with your hosting support?
 

[ltownsend]

Yes, it looks like that's the problem. Thanks for your help.