Thanks a LOT for this. I have been out of the loop, forum-wise, for a while and when i check back in the first thing i read is this great tut. This was a problem i was having months ago and couldn't find an answer - and here it is. I will use this a lot.
Your welcome Elizabeth. This is one of the best I've found to blur the background. I have a notebook full of tuts, but this one I leave out because I use it so often.