... Windows Server 2003, the operating system requires the following: Class installer and optional co-installer Class installer is a dynamically loaded library (DLL) that installs, configures, ... HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Class\<ClassGUID>. Here, device installers store data on each individual class of devices, its respective class installer, and coinstallers (if ... Hardware Compatibility List (HCL), it& apos ;s necessary to test both the device and its driver in the Windows Hardware Quality Lab (WHQL). If the test results are satisfactory, WHQL includes...