access folder not controller?

[eluser]w1n78[/eluser]
i got my mod_rewrite working properly but i would like to create a "files" folder and have some pdf files inside it so it would look like domain.com/files/file1.pdf. but in CI this means it's trying to access a controller named "files" which doesn't exist. how do i create a folder called "files" and not have CI think it's a controller but just a regular folder?