By passing Drupals control over sub directories

I have a utility that belongs to an organization (website) that needs to be placed in to a sub directory, however I am wondering if Drupal is preventing this, I don't get an error page from Drupal, but I can't get to the sub directory under it either.

I have set up lots of these, but just never under a Drupal directory. I use my host to do the redirection and it works fine.
for example
I set up a sub directory like
http://www.someurl.com/subdirectory

Then I use my hosting company to create a direct path with correct 755 permisions like
http://subdirectory.someurl.com

Normally this works, however I can't seem to get this to function as a subdirectory where Drupal is installed. Any ideas?

Thanks

Will

Hi Will, you may want to create a new discussion post that way we can see who responded with which reply vs a wiki page that anyone can edit at any time. Can you describe the error you are getting in more detail? -Mike