Is there a way to fix mouse move?

[Aro2220x]

When I hold right click I can mouse move around the screen. Looking up and down works great but when I move left or right I have to move my mouse LITERALLY 10 feet to do a 360. Obviously my mouse pad isn't large enough so I was wondering if anyone knew how to adjust the sensitivity on the horizontal component somehow whether its inside of EQ, in some config file, or some way to do it through windows or mouse software.

I would much prefer not to have to look around with the keyboard =/