Brief and to the point as usual Sergey. That's a great reference guide with a lot of useful sample codes - i have it now bookmarked. Thanks for a point in the right direction. I take it you are suggesting the tutorial which moves form into the executable program which i shall study over next couple of days. I'm always hopeful that someone will give me the line before and the line after which bandages the whole problem and sends me on my way.

k