Hi
When I run RINPUT ( http://www.digitalise.net/2009/01/03/rinput-released/ ) this error appears 
I use Windows XP SP3.
My settings:
mouse: Razer Deathadder
dpi: 450
sens in game: 3.00
sens in win: 6
m_pitch: 0.018
cl_mouseaccel: 0.00
fov: 110
r_mode: 8
windows mouse acell = all disabled (accelfix + registry smoothmouseXYcurves)
BTW
I can feel the diference between rinput on and off, but I don’t know if rinput works properly because I got error at start. So my question is: How to solve the RAW input error " You must at least have Microsoft Windows Xp to use this library" ?.