first time I tried this nothing happened, rebooted, replaced the kexts etc. from here:
touchpad-drivers-t5577.html
second time prefpanes showed up, could choose settings but.. absolutely nothing happened, rebooted twice and still nothing, removed it and haven't been able to get prefpanes to show up since then.
tried to do the sudo commands earlier today but it wouldn't get anywhere past unzipping them at all, it didn't even want to make a folder or anything..
[edit]
just tried your .dmg file and I got prefpanes to show up but again.. two finger touch makes no difference at all, i'm totally confused, are people actually getting true two finger touch .. working?
When I had OSX on my e1705 the whole two finger thing was just getting figured out and I tried it once but I got the same thing, when I put two fingers on the touch pad the mouse just freaks out and goes somewhere random on the screen.
-Dell Mini 9 - Refurb $269: Obsidian Black, 32GB STEC SSD, 8GB Kingston SDHC (left from previous owner), 2GB 667Mhz RAM, 1.3MP Camera, Bluetooth, Mac OSX 10.5.7
-Dell e1705 - New $1055: ATi X1400 OC/ed 175% faster, XPS 1710 Heatsinks, XPS 1710 Body
e1705 is old, it needs not to be upgraded, but rather be replaced.