[Nuggs]

This is what I do. No clue why I use MinimapZoomIn/Out:Click but it works.

Minimap:SetScript("OnMouseWheel", function(self, delta)
	if (delta == 1) then
		_G.MinimapZoomIn:Click()
	else
		_G.MinimapZoomOut:Click()
	end
end)

As for the argX changes and other information with a few examples, you can check out this thread:

http://forums.worldofwarcraft.com/th...26580975&sid=1

And I was beat.