Scratch that, I have decided NOT to put the soundcard back in and use the onboard motherboard sound.
But, and what a surprise, I can't get it to work.
I re-enabled the onboard device in BIOS and Windows found it on startup, I then installed the drivers from the NVIDIA motherboard drivers CD that I downloaded before.
I did forget to uninstall the SoundBlaster rubbish first though.
I'm now looking on the Gigabyte website for the most up to date drivers, but it you have any better suggestions please reply!