USB Device

I have a pc with Windows 98 second edition. I am trying to install a USB Camera on it. In Device Manager under USB Controller it shows me Yellow mark with a device staus of ‘ NTKERN.VXD’ driver is loaded. Try to fix it by Update driver like this. I have tried by updating driver, remove it & start windows again but result is same. I tried by reinstalling windows but same thing. How can i solve this problem. I also tried by deleting vmm32.vxd file from windows/system directory but same problem occurs.
USB is enabled in BIOS & detecting Camera.

Please give me an early reply.