Thanks Dave.
I found an uninstaller for sharpsky 3.4 driver in the C:\Program Files\Common Files\ASCOM\Focuser\....
I just used this and now installed PC driver 3.5.....many thanks. I was looking for the dir to find the dll ...didn't find it ..until now.
The new ver 3.5 driver has a .dll in the same location no uninstaller.
Have much on my plate at the moment so many thanks for your help and patience.
As for sunburn....always keep your swimming trunks on....lesson No1, when at the beach! I found that the hard way once, when young
.