Many thanks Peter for taking the time to respond to my post, & for your kind words.
I'm relatively new to Astro, only starting in 2011......looking back, I seem to have a habit of just getting something to work, or just learning something new, then change or add something to my setup, & the learning starts again.......& now, I 've added an Astro CCD & feel like a beginner again processing LRGB images......not that I was that competent processing my images from a DSLR!!! Still, onward & upward, so they say......
Thanks once again.