Hello Tim, > It's still perfectly valid to create "type 1" GUIDs, where you increment > the top set of digits to get additional GUIDs. The Uuidgen tool will > give you a base if you say "uuidgen -x". Using UuidGen -x, you need to make sure it uses a valid, unique MAC address. If your system have virtual network adapters created by VMware, VBox etc., UuidCreateSequential may use their MAC addresses that are not unique. Regards, Eugene ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/