DMelone,
That's a very nice invocation.  Are you experienced at casting a "directional circle" or did you get that from somewhere else.  
Either way, thanks. 
I have many Native American friends and have taken part in their ceremonies where they call to the four directions.  However the invocation that I had posted is actually from somewhere else.  HD did a thread a couple of years ago and he and I kept going with the invocations.  It was pretty cool and went for quite a few pages.
You are welcome by the way.  If I may ask, are you a practitioner?