is there any way to alter the cfg file or whatever file it is that controls the weather for FS9 as I when i use real weather I am getting a lot of turbulence which i findf more annoying than realistic (which it certainly isn't the way HS has modeled it!) if there is a way to get rid of the turbulence feature altogther i would appreciate knowing what i need to do.

There's a checkbox in the sim. The Learning Centre has details.Allcott

Just go to the weather settings and click the check box to disable the turbulence.