Yeah, I haven't been able to disable mouse accel when playing NS no matter what i try... Specs as follows

Mouse: Razer Diamondback (with S&S pad)
OS: WINXP SP2 (up to date)
Specs: AMD AthlonXP +3000 2.16 GHz, 1,28 Gb RAM, ASUS Radeon X800XT

Methods I've tried already:
Using registry fixes including the cpl fix
Fiddling with reg values manually
Using an executable to reset accel (the accel kept going on and off in the game)
Switching back and forth with Razer and M$ default drivers (smoothing on or off no avail)
And some other fancy crap

And yes I just got the new 5.0.8.0 drivers for razer DB and still just no go for the accel

Are you aware that there are mouse accel settings in windows AND NS?
Are you sure that it's actually off, and it's not just high sense/small mousemat?

-noforcemparms -noforcemaccel?

I've tried the command lines before like this... Put them in the all seeing eye when it runs the exe (I got it to work with HL/NS but STILL no go, and YES I tested some other commands to see that I did things right)

I naturally have my sens maxed at 1600 dpi, otherwise I would lose accuracy (and this about accel, not oversensitivity) and I was thinking if this just about having a poor screen with basically capped at 1024x768 res. Perhaps getting a better one with 1600x1200 res support would help?

I was kinda looking forward to responses from other Razer mouse with WINXP users... Oh well

Never had this problem with my old mouse (MX510), but I have started to notice a slight acceleration effect with my new-hawtness MX518, but only when running it at 1600dpi. Even with mouse acceleration turned off under SetPoint, and under each game (it's not unique to NS), it gives a slight acceleration effect, hardly noticable, but when playing twitch shooters it appears to be most prevailing. I've just put this down to my inexperience with 1600 dpi mice.

Have you had the Razor for long at 1600dpi? Is this problem unique to NS, or most noticable with the FPS genre?

If it is, then you might be suffering from inexperience with the high sensitivity mice, like I still am (and probably will be for a while)

I was wondering what resolution these ppl are using with their 1600 dpi mice? I think getting a better screen will solve much of my problems... And yes the accel is worst in NS for some reason.

I personally use 1280x1024 @ 100Hz for my resolution for my 1600dpi setting.

The acceleration is starting to be less noticable, the more I use the mouse. If the acceleration is worse in FPS games, then it probably is inexperience at 1600dpi speeds.

Try turning your sensitivity down a bit. It helps a little.