Anna wrote: >It is so hard to distinguish where sound is coming from.>> Do what mechanics do--use a stethoscope. A metal rod or screwdriver makes an excellent stethoscope. Don Penlington From the Beach at Surfers Paradise in sunny Queensland. Computer tutorials, local scenery, and other things at my website: http://users.tpg.com.au/deepend/index1.html The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com