@TedZ > dust gun. Claimed to be environmentally safe and more > powerful than traditional aerosol dusters, the > residue-less CO2 cleaner is also said to be nonflammable. "I know we wouldn't do this, but ..." (TM) I heard a story about getting the dust out of a PC from the owners of my local auto shop. The machine was unstable and someone suggested that getting the dust out would help. They used a high pressure compressed air line (suitable for inflating tires or using air powered tools). Yes, it blew the dust out ... and also blew some of the components right off the printed cirduit boards. That air wasn't clean either. And no, that PC never worked again. > (It can be fatal if breathed exclusively In that case, save the Nitrous Oxide for making Whipped Cream. LOL MGD