Unfortunately I don't have a mouse with a scroll wheel and the multiple fingers on the touchpad does not work. I have the Logitech Marble Ball. But after consideration, I decided to buy soon a new mouse of the same brand with scroll wheel. My old mouse needs to be replaced anyway. The mouse emulator would be an option but I find that too cumbersome, also because I use other applications I fear that this will give conflicts. But thanks for your advice and answer. ;)
Cheers!
GM