i think i might have the same problem except that my volume control doesn't pop up and i don't have any sound. when i go to the device manager shows that device cannot start, even though the driver is listed. i have a sony laptop pcg-z505ls. if you need this driver try going to sony
http://esupport.sony.com/perl/model-swu.pl?mdl=PCGZ505LS
when i try to install, however...my computer crashes.
so gl 2u if it works. oh i've got win 2k