Any USB Experts?

[me at mattgillen.net (Matthew Gillen)]

markw at mohawksoft.com wrote:
> I am looking for a way to use a USB mouse in useland. I am able to open
> it, and read from it, so far so good.
> 
> If you are familiar with mice, I want to write reset, resolution, and
> report mode to the USB mouse, but all writes just get an error.

What's the error?  On my machine, the permissions for /dev/input/mouse0 is:
crw-r--r--  1 root root

(ie no write access for anyone but root)

Matt