About This File
This is my modified version of the Alps trackpad PS 2 driver to run in 64-bit mode. I do not remember who made the originals, but I believe it is AnV and Slice. Tested on a Latitude D630 running 10.6.8 and a Latitude D830 running 10.7.1. This also allows for the use of the stock trackpad.prefpane, with 2-finger scrolling option, also in 64-bit mode. Loadable from /Extra/Extensions/
Update (6/14/12) This also worked with a Sony Vaio VGN- NR110E in Lion only! It did not work under Snow Leopard. Only tried in 32-bit (arch=i386) on both. Did not try in 64-bit because of the x3100.
If you are commenting "not working", can you please list the make, model, and OS version of the computer?