Using the scroll wheel to move an object by increments?

For my last annoying question of the day, is there any way is which I could set up an object so that is can be put into a mode where I can use my scroll wheel so that the object can move incrementally?

I want to be able to set this up so I can pick what the scroll wheel can affect when I use it so, for example, I might want to affect the X scale of an object or the opacity of a material, etc…

I know that this sounds very much like ‘addon territory’ but I would still like to know if this could be achieved normally.

Thanks in advance.

Cheers,
Paul
(mix_mash)