"Enhanced Pointer Precision" - Add on? Help?

Hello everyone. I just switched from M$ to a new 17" MBP. I love the new machine and everything it stands for but after using it for a few days, I'm having a really hard time with something.

I'm really having a hard time controlling my mouse. I've got the same Logitech trackball I used on my WindowsXP machine, installed it's drivers, configured it's buttons and got the track speed about right. However...

I'm having a hard time always missing when clicking on icons! I never even considered "aiming" at stuff before but somehow, I'm now feeling like I'm surfing with hand cuffs on or something. 😉

I finally figured it out - I was missing "enhanced pointer precision" or sometimes called "pointer acceleration".

Can someone please direct me to some add-on or preference pane or something that will smooth out the mouse movements? I never considered to be that twitchy on the mouse, but after a few days here it's apparent I am. I cannot effortlessly move where I want. It seems I have to click and miss a couple times, then very carefully aim. Frustrating.

Other than that, this Mac stuff is pretty sweet though.

Help? Please?

Thanks!!