Cheers for the welcome. This looks like an interesting site. "if it aint broke, fix it till it is" is a great motto, a great deal of the tiny amount of knowledge I have gained over the last couple of years has been through breaking the OS and re-building it. Came into this game too late in life though, in my forties now and as the brain cells are dying this tech stuff can be hard to get your head around. Great fun though!