Windows Vista/7 64bit only. --------------------------- Currently there is an issue with LCUSBdriver package under 64bit OS, because this drivers still not certified by Microsoft. But it's possible to install uncertified driver in Windows-7 by using the "Disable Driver Signing" option. There are three ways to do this: 1) When rebooting the computer, press F8 (make sure FLock is enabled, if your keyboard supports it) after the initial BIOS screen to access the boot options. Select the "Disable Driver Signing" mode. This is every boot needed. 2) Within Windows-7, go to the Start Menu and type "cmd.exe" in the Search Bar (do not press Enter). Right click on cmd.exe and choose Run as Administrator. If User Account Control is enabled, click Yes. When the Command Shell is open, copy and paste (right-click and select Paste) the following: bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS bcdedit.exe -set TESTSIGNING ON The statement "The operation completed successfully." should appear. After restarting the PC, driver signing will be disabled. 3) Use Driver Signature Enforcement Overrider tool. http://www.ngohq.com/home.php?page=dseo Please let us know if you have any questions. LIGHTCONVERSE support team. 02002, Raisy Okipnoy str., 4a, ap.37, Kiev, Ukraine. Tel/Fax. +38044-5411386, Tel. +38044-5929015 (GMT+02) Skype: lightconverse lightconverse.net