Does anyone have any experience with WinBest 4D+ mouse by A4 TECH?

I'v just tried it with NetBSD-1.4.1.  It worked fine on XFree86 as an
pmsi, but the 2nd wheel and thumb button are treaded as 1st wheel and
middle button.

It would be nice if someone already has a driver for that mouse.

For information about the product, see http://www.a4tech.com.tw