Need Yamaha DS-XG WDM driver for Vista?

I’ve installed windows vista ultimate, PIV 2,33 GHz, 734 Mb of RAM, Yamaha DS-XG WDM. Everything ok but i got trouble with my soundcard, yamaha ds-xg wdm.Vista doesn’t detect it automatically, so I can’t listen my songs any more. I’ve looked for it at any websites and found it, but it was not work! Vista unrecognized it. But now when i write this article, my soundcard has worked.
How to do it?
1. You have to download this file yamaha-ds-xg-pci-audio-codec-wdm.
2. Open with winrar and extract, select folder where the files should be extracted.
3. Open device manager (right klick Computer at start menu, klick manage).
5. Right click your other devices (Multimedia Audia Controller)) and select Update Driver Software.
6. There are two choice, Select automatically or Browse my computer, select Browse my computer.
7. Browse folder where the files is extracted.
8. Select Install driver software anyway, if Windows Security warns.
9. Finish, your driver should be used. But if it doesn’t work, you have to look it for yourself.