How to write a inf for USB Audio class on Win98?

Hi all,

I get a problem that I need a inf to install my USB audio device. It’s a
microphone on PC camera and comply with USB audio class spec. You know on
Win2000 or later it’s unnecessary to supply driver for USBaudio, but I
wanna Win98se now! I find win98se supply usbaudio.sys for USBAudio, but I
have no idea how to write the inf. Could anyone help? Any advice is useful
and greatly thankful.

Best Regards,

Dengwen