When the LAVA card is installed and the system boots up, the operating system does not detect the LAVA card as new hardware, and so does not launch the "New Hardware Found" driver installation wizard. A couple of reasons for this are possible: the operating system already has drivers installed from a previous installation, or there is a hardware incompatibility.
In the first instance, uninstalling drivers fully might fix the problem; otherwise contact LAVA Technical Support. Step-by-step uninstall instructions are at:
Driver Uninstallation for Windows 2000/XP or alternately can be found on the installation CD that came with your LAVA card.