Vista - reg or script to switch mouse acceleration

Hello, I am trying to make a script or reg file to switch on and off "enhance pointer precision" which is generally a mouse acceleration you can set in control panel. I was trying to find what's happening in registry via sysinternals Process Monitor, but did not see anything interesting. Then I found that a value HKEY_CURRENT_USER\Control Panel\Mouse\MouseSpeed switches between 0 an 1 when I check/uncheck this in control panel, but it is probably not the only thing! Because When I change this manualy it does not do anything and the mouse settings remains unchanged... What do you think? I was trying to find some WMI method but failed...

To give you an idea, to get the higher speed:

MouseThreshold1 = 0
MouseThreshold2 = 0
MouseSpeed to 1 or 2 (1 X2 the normal speed, 2 X4 the normal speed)

wow I have it solved with this autoit script:
enhance mouse precision switch on/off - AutoIt Forums
If you want it, you have to install autoit and then you can compile it to exe file.