qlt, those are all fair questions, and are part and parcel of what we should be discussing on this board. I thought I'd seen a response to similar questions before. When I went looking, I found it on PK's blog. Here's the link: <A HREF="http://www.blogger.com/comment.g?blogID=20975303&postID=115444315804134715" target="_blank">http://www.blogger.com/comment.g?blogID=20975303&postID=115444315804134715</A> Please let me know if this doesn't speak to what you've asked; if not, I'll respond directly. Thanks! gktignol