Hello Willy,
browsing through the single parts with the scroll wheel IS possible on Windows XP.
Here is a short video.
I pointed the cursor on parts list and then I simply scrolled with the scroll wheel up and down. Without click on the left button. That can't I do on Windows 7. What's in my opinion strange.
browsing through the single parts with the scroll wheel IS possible on Windows XP.

I pointed the cursor on parts list and then I simply scrolled with the scroll wheel up and down. Without click on the left button. That can't I do on Windows 7. What's in my opinion strange.