I recently built a modest (OK, extremely cheap) gen purpose desktop/HTPC with an Asrock A780Full HD board (Radeon HD3200IGP) into which I've just installed a radeon 4350 in the (vain?) hope of carrying sound over its hdmi port thru my pioneer receiver into my vizio display.

I'm happy with the PQ but there's no audio coming over the hdmi connection in Hardy 8.04. Works fine under XP SP3. Obviously I'm not a gamer or in need of the latest/greatest. Searched here but couldn't come up with a definitive answer.

Just installed the latest Catalyst (10.2 I think) and d/l the latest realtek hdmi drivers (haven't installed yet)

Hope I've given enough info; can someone point me where to start looking for a solution?