I have sucessfully installed Windows 8 with EFI-Boot, but the known problem is the not working soundcard of my iMac. Have installed the bootcamp drivers and read the hassel about getting the soundcard to work. So, instead, is it possible, to get an external soundcard or DAC to work? for example this one, an Pro-Ject USB Box S: http://translate.google.de/translate?hl=de&sl=de&tl=en&u=http://www.pro-ject-shop.de/usbbox.php has someone got an external soundcard or DAC on a not working internal soundcard to work? Thanks!