Problem: Scrolling is not possible with a Synaptics touchpad

Synaptics touchpads use a non standard way to perform scrolling in application, which makes it fail with some applications, or some parts of some applications.

The solution is to instruct the Synaptics driver to use standard messages when communicating with that application:

1.  Open C:\Program Files\Synaptics\SynTP\tp4table.dat in notepad   
2.  Add the following lines to the "Pass 0" section:
; PHPEdit patch!
*,*,PHPEdit.exe,*,*,*,WheelStd,0,9
*,*,Hello.exe,*,*,*,WheelStd,0,9
3.  Reboot
 
Some documentation online seems to say that C:\Windows\System32\tp4table.dat is the correct location, but editing it on my system didn't appear to do anything, whereas the Program Files location did.

Source:

http://www.nerdblog.com/2006/02/synaptics-thinkpad-scrolling-in-picasa.html

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