I was really interested when i read about this. http://groups.google.com/group/misc...ad/31ea4ac4aea16e99/?#doc_a2ee6622d3d84c57... hopefully that'll be an active link.... at any rate. hmmm i really don't know how to begin this. i'll post some annotated charts later in the day to get some feedback on if i'm doing it just right. i'm currently going through the 2nd level, and drilling that into my brain.