jairichard, welcome to the forums.
First off that sound card is in no way, shape or form a Creative sound card. It is nothing more than a SoundMax/ADI based card (and use that loosely as it is more of just a riser card than an actual sound card), and not a X-Fi. It uses the ADI/Soundmax
drivers which you have to get from the motherboard manufacturer, the X-Fi part comes from it getting to use some of the X-Fi software; it does not use the Creative
drivers, so not sure what you managed to install from Creative's site.
Have a look through some of these threads dealing with that sound card,
Windows 7 Forums - Search Results
and what others have done to get it to work properly in Windows 7.