Turn computer on.
Hit 'delete' to enter bios.
Find onboard sound.
Save bios setting and reboot (don't change any other settings).
Go into windows and remove all sound drivers for the onboard sound with driver cleaner.
Turn off computer.
Put in sound card after unplugging computer.
Turn computer on, use disk instead of allowing windows to install its own drivers for it, or better yet, download the new ones off the Creative site for the card.
Reboot, re-enter windows, and enjoy.
DONE