Logitech Headset Drivers Logitech Headset Issue?

Logitech headset issue? - logitech headset drivers

Well, if I have a Logitech headset for my computer (with USB cable) and I just installed Vista Ultimate 64 bit. Whenever I plug in my headphones is not the default device, my speakers, but if I change it so that my helmet is the only default device changes back to my speakers when you unplug the headphones. I can not find drivers for the device anywhere on the Internet. Need help plz