Today I’ve installed Windows Vista ultimate 32bit on my latitude D810 which I’ve bought last year, I’ve realized that microsoft issued all the drivers I need, I just update the windows and everything was just fine. Oh just one thing, the Touchpad/Stick driver was not installed, it was just a mouse, but as you know dell new laptops’ touchpads (mine is Alps Touchpad) have some biltin gesture support, so you can assign H/V scroll and forward/backward into touchpad just via driver! So I tested the Windows XP driver that dell provide on Beta2/RC1/RC2 all have problems, every time windows start it gets an error, but if you pass that, it will work!
I just checked the support.dell.com for new vista driver for the D810, but nothing for touchpad, I known that there is some new drivers for Inspiron/XPS 630M touchpad for vista but their touchpad is something else! so I check the D820, WOW there is new driver for the touchpad I just tested it and it is working well, no errors.