Here's the little tweaks I applied to my Apple Magic Trackpad. It doesn't come with a bluetooth dongle so if your motherboard doesn't have bluetooth support you will have to buy a dongle.
Create a file under /etc/X11/xorg.conf.d called 60apple-magic-trackpad.conf. If you don't have an xorg.conf.d directory, create one.
Code:
Section "InputClass"
Identifier "Apple Magic Trackpad"
Driver "synaptics"
...
