Hiya Jim, I'm sorry, I did not mean to confuse anyone with my last message. The article was written by Aubrey Kagan. I could be wrong, but I think Aubrey wrote the code as well. I don't know for sure since I don't see his name in the source file and I don't have that issue of Circuit Cellar in front of me right now. Dave Tweed does a great job of indexing all the Circuit Cellar articles. Thanks to him, I was able to answer your post so quickly instead of rummaging through my stack of Circuit Cellar articles -- thanks Dave! Best regards, Ken Pergola -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu