doveas, the post you are quoting is somewhat outdated; HAL is no longer used to configure input devices, so the configuration is no longer done in a fdi/policy file. Now the configuration is done in either the old /etc/X11/xorg.conf file, which is optional and therefore missing in a lot of distros, the new xorg.conf location in /etc (/etc/xorg.conf), or else through the use of xorg.conf snippets located in the /etc/xorg.conf.d/ folder, see the previous posts for a more thorough explanation. Since all of these files are optional, they and their containing folders may not be present on your system - do not despair, all you have to do is make them and put the files where they are expected to be found.
As for the actual fine tuning of the configuration, its mostly just a trial and error sort of thing, I merely described a systematic way of adjusting the numbers in the passage you quoted.
There are other issues I have found, for instance, the touchscreen driver is only compatible with the open source ati/radeon graphics driver. So if you are using fglrx or some other driver you will have problems. Easy enough to switch. Also I only got it to work with screen resolution of 1024x768, and when I use a second monitor it gets all messed up.
Last edited by bnr; 09-01-2010 at 10:00 AM.