InfoPath Dev

Any help would be great.

 I'm working with a list, with a browser enabled form, that contains various folders. Is it possible to save the item to automatically save within a set folder on submission?

These folders have set permissions on who can access them. Is there a combination of permissions i can set to allow these people to edit that data whist also opening up the list so that anyone can submit an item?

Many thanks for any help!

If you already have permissions set up correctly on each of the folders, it just sounds like you need to build logic in your form to know which folder to submit/save the data to.  I believe you can just create separate submit connections to each of these folders (I haven't done this with folders exactly, but I know it will definitely work on separate lists or libraries).  Once you create the different data connections, you can set up your form to submit to a particular connection based on logic in your form.  You can do this via rules.