Check this out. I have no experience with it, but looks like the way to go. Yes, it is expensive. TEC _Click here: Airwolf Filter Corp._ (http://www.airwolf.com/Home/tabid/53/Default.aspx) -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.tvbf.org/mailman/private/reflector/attachments/20060504/a66b7bd7/attachment.html