How can i allow a new folder on the root structure?

[shawn_a]

You should be able to create folders anywhere. Those !-f !-d rewrite conditions mean "exclude real files and real directories from the rewrite"

Although typically if its scripts as in code for your GS site, you should copy your theme and put it the theme folder.

My alternative on my site for additional non GS content was to use GS in a subdirectory, with a rewrite to account for that. ( Its in the wiki ). Then my web root isn't full of GS assets.