Hi @Mahajan
What exactly do you mean by disabling the cell scroll ? If and all there is an option as such, then it basically means you can't scroll the cell at all and the cell view is fixed. This makes the cell redundant as at any given point of time, you can only view a part of the code. If this is what you wanted, even now you can minimize the cell with large number of lines and continue.
Nevertheless if scrolling alone is the cause of trouble to you, then scrolling with your mouse pointer outside the cell should suffice.
Do let me know if I interpreted your problem differently.
Uma Mahesh D