try installing the software, both drivers and the mediasource files. run the speaker calibration.
open IE and go to
Creative's on-line AutoUpdate site choose the demographic option that applies to you then choose language install the ActiveX control util [signed by CreativeLabs, INC] and let AutoRun do it's thing and update you with programs. when it finds updates and you need to install them you will have to temporarily allow popups for the site as it will pop up and begin download and install procedure.
now after AutoUpdate is finished reboot, try it out see how things go... if things are still sketchy or if you just want to be as up to date as possible go
here for manual downloads of drivers and software updates, some include critical updates. so you may want to check it out in any case.