Can an SWF call an external file to determine what frame or scene to start on?

I am making a small desktop widget and I am not sure how to accomplish what I am trying to do.

I made a configuration menu that can write to a text file. What I need to happen is for my project to look at that configuration file when it starts to determine what scene or frame to start at.

What I need help with is the code for the movie to check an external source for what frame or scene it should start at.

Can anyone help out? Flash cs3 and AS2.

Thanks in advance!