Upgrading to Boot camp 3 to get audio to work

I have a Macbook running Windows 7 and Leopard and the audio will not play on the Windows side. After some reading, I see that I need to upgrade to Bootcamp 3.0 in order to get audio to work in Windows 7. However, this does not appear to be an available download.
1. Can 3.0 be downloaded from somewhere?
2. If not, will simply upgrading to Snow Leopard correct this problem?
Thanks.

If your audio is handled by RealTek, then you have to go to their site and grab the latest Realtek audio driver.
You do not want to disable.
Uninstall or rollback, maybe.

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null
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pulse
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