so creatives latest drivers r 2.18.0015, the ones that u have installed. i have 2.18.0013. SO i uninstall all the creative stuff from my P4. Then I do a fresh install of 2.18.0015, but it wont work, turns out those drivers were only meant for Win7. All Win XP users r forced to use 2.18.0013. Now when I reinstall 2.18.0013 there is no Dolby Digital or DTS. Do u have Dolby and DTS in ur WIN XP? Cause I personally doubt u have it there