thsnk's

Support Information:
Device Type: Sound Card
Manufacturer: yamaha
Model: ymf744b-v
Interface: PCI / ISA
Operating System: Windows XP Professional x64
Age of Device: < 1 year old
FCCID: lwha471r1

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=19&qa7=1501&dp=1&qm0=ymf744b-v&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=yamaha+Sound+Card+yamaha+ymf744b-v+Windows+XP+Professional+x64+lwha471r1)

device is too old. It was never supported in Xp x64 and probably never will be.