USB\VID_­0AC8&­PID_­3420&­MI_­00 drivers

Here is 1 driver compatible with USB\VID_­0AC8&­PID_­3420&­MI_­00.
This is Device ID of Lenovo EasyCamera.
Here is only last drivers for this DeviceId. Almost all of them are compatible with your hardware.
Anyway, you can try to use extended search exactly for your hardware.
Category:Notebooks
Manufacturer:Lenovo
Hardware:3000 N500
Software name:Bison/Chicony Camera Driver
Version:6.32.714.7
File Size:10.38Mb (10882800 bytes)
Released:18 Nov 2008
System:Windows VistaWindows XP
Description:Bison/­Chicony Camera Driver for Windows Vista 32-bit and Windows XPDownload Lenovo 3000 N500 Bison/Chicony Camera Driver 6.32.714.7